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<ol><li>Ford, J. L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Use+of+Model-Based+Compartmental+Analysis+and+a+Super-Child+Design+to+Study+Whole-Body+Retinol+Kinetics+and+Vitamin+A+Total+Body+Stores+in+Children+from+3+Lower-Income+Countries%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">Use of Model-Based Compartmental Analysis and a Super-Child Design to Study Whole-Body Retinol Kinetics and Vitamin A Total Body Stores in Children from 3 Lower-Income Countries.</a> J Nutr. 150 (2), 411-418 (2020).</li>
<li>Haskell, M. J., Jamil, K. M., Peerson, J. M., Wahed, M. A., Brown, K. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((The+paired+deuterated+retinol+dilution+technique+can+be+used+to+estimate+the+daily+vitamin+A+intake+required+to+maintain+a+targeted+whole+body+vitamin+A+pool+size+in+men%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">The paired deuterated retinol dilution technique can be used to estimate the daily vitamin A intake required to maintain a targeted whole body vitamin A pool size in men.</a> J Nutr. 141 (3), 428-432 (2011).</li>
<li>Lietz, G., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Current+Capabilities+and+Limitations+of+Stable+Isotope+Techniques+and+Applied+Mathematical+Equations+in+Determining+Whole-Body+Vitamin+A+Status%5BTitle%5D)+AND+%22Food+Nutr+Bull%22%5BJournal%5D)">Current Capabilities and Limitations of Stable Isotope Techniques and Applied Mathematical Equations in Determining Whole-Body Vitamin A Status.</a> Food Nutr Bull. 37, S87-S103 (2016).</li>
<li>Pinkaew, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Triple-Fortified+Rice+Containing+Vitamin+A+Reduced+Marginal+Vitamin+A+Deficiency+and+Increased+Vitamin+A+Liver+Stores+in+School-Aged+Thai+Children%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">Triple-Fortified Rice Containing Vitamin A Reduced Marginal Vitamin A Deficiency and Increased Vitamin A Liver Stores in School-Aged Thai Children.</a> J Nutr. 144 (4), 519-524 (2014).</li>
<li>VMNIS: Serum retinol concentrations for determining the prevalence of vitamin A deficiency in populations. , World Health Organisation. 
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<li>Engle-Stone, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Plasma+retinol-binding+protein+predicts+plasma+retinol+concentration+in+both+infected+and+uninfected+Cameroonian+women+and+children%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">Plasma retinol-binding protein predicts plasma retinol concentration in both infected and uninfected Cameroonian women and children.</a> J Nutr. 141 (12), 2233-2241 (2011).</li>
<li>Engle-Stone, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Filipino+Children+with+High+Usual+Vitamin+A+Intakes+and+Exposure+to+Multiple+Sources+of+Vitamin+A+Have+Elevated+Total+Body+Stores+of+Vitamin+A+But+Do+Not+Show+Clear+Evidence+of+Vitamin+A+Toxicity%5BTitle%5D)+AND+%22Curr+Dev+Nutr%22%5BJournal%5D)">Filipino Children with High Usual Vitamin A Intakes and Exposure to Multiple Sources of Vitamin A Have Elevated Total Body Stores of Vitamin A But Do Not Show Clear Evidence of Vitamin A Toxicity.</a> Curr Dev Nutr. 6 (8), nzac115(2022).</li>
<li>Larson, L. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Approaches+to+Assess+Vitamin+A+Status+in+Settings+of+Inflammation%3A+Biomarkers+Reflecting+Inflammation+and+Nutritional+Determinants+of+Anemia+%28BRINDA%29+Project%5BTitle%5D)+AND+%22Nutrients%22%5BJournal%5D)">Approaches to Assess Vitamin A Status in Settings of Inflammation: Biomarkers Reflecting Inflammation and Nutritional Determinants of Anemia (BRINDA) Project.</a> Nutrients. 10 (8), (2018).</li>
<li>Sheftel, J., Tanumihardjo, S. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Systematic+Review+and+Meta-Analysis+of+the+Relative+Dose-Response+Tests+to+Assess+Vitamin+A+Status%5BTitle%5D)+AND+%22Adv+Nutr%22%5BJournal%5D)">Systematic Review and Meta-Analysis of the Relative Dose-Response Tests to Assess Vitamin A Status.</a> Adv Nutr. 12 (3), 904-941 (2021).</li>
<li>Tanumihardjo, S. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Biomarkers+of+Nutrition+for+Development+%28BOND%29-Vitamin+A+Review%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">Biomarkers of Nutrition for Development (BOND)-Vitamin A Review.</a> J Nutr. 146 (9), 1816-1848 (2016).</li>
<li>Furr, H. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Vitamin+A+concentrations+in+liver+determined+by+isotope+dilution+assay+with+tetradeuterated+vitamin+A+and+by+biopsy+in+generally+healthy+adult+humans%5BTitle%5D)+AND+%22Am+J+Clin+Nutr%22%5BJournal%5D)">Vitamin A concentrations in liver determined by isotope dilution assay with tetradeuterated vitamin A and by biopsy in generally healthy adult humans.</a> Am J Clin Nutr. 49 (4), 713-716 (1989).</li>
<li>Haskell, M. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Assessment+of+vitamin+A+status+by+the+deuterated-retinol-dilution+technique+and+comparison+with+hepatic+vitamin+A+concentration+in+Bangladeshi+surgical+patients%5BTitle%5D)+AND+%22Am+J+Clin+Nutr%22%5BJournal%5D)">Assessment of vitamin A status by the deuterated-retinol-dilution technique and comparison with hepatic vitamin A concentration in Bangladeshi surgical patients.</a> Am J Clin Nutr. 66 (1), 67-74 (1997).</li>
<li>Green, M. H., Ford, J. L., Green, J. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Development+of+a+Compartmental+Model+to+Investigate+the+Influence+of+Inflammation+on+Predictions+of+Vitamin+A+Total+Body+Stores+by+Retinol+Isotope+Dilution+in+Theoretical+Humans%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">Development of a Compartmental Model to Investigate the Influence of Inflammation on Predictions of Vitamin A Total Body Stores by Retinol Isotope Dilution in Theoretical Humans.</a> J Nutr. 151 (3), 731-741 (2021).</li>
<li>Suri, D. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Association+between+Biomarkers+of+Inflammation+and+Total+Liver+Vitamin+A+Reserves+Estimated+by+%2813%29C-Retinol+Isotope+Dilution+among+Preschool+Children+in+5+African+Countries%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">Association between Biomarkers of Inflammation and Total Liver Vitamin A Reserves Estimated by (13)C-Retinol Isotope Dilution among Preschool Children in 5 African Countries.</a> J Nutr. 153 (13), 622-635 (2023).</li>
<li>Furr, H. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Stable+isotope+dilution+techniques+for+assessing+vitamin+A+status+and+bioefficacy+of+provitamin+A+carotenoids+in+humans%5BTitle%5D)+AND+%22Public+Health+Nutr%22%5BJournal%5D)">Stable isotope dilution techniques for assessing vitamin A status and bioefficacy of provitamin A carotenoids in humans.</a> Public Health Nutr. 8 (6), 596-607 (2005).</li>
<li>Green, M. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((A+Retinol+Isotope+Dilution+Equation+Predicts+Both+Group+and+Individual+Total+Body+Vitamin+A+Stores+in+Adults+Based+on+Data+from+an+Early+Postdosing+Blood+Sample%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">A Retinol Isotope Dilution Equation Predicts Both Group and Individual Total Body Vitamin A Stores in Adults Based on Data from an Early Postdosing Blood Sample.</a> J Nutr. 146 (10), 2137-2142 (2016).</li>
<li>Green, M. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Use+of+Population-Based+Compartmental+Modeling+and+Retinol+Isotope+Dilution+to+Study+Vitamin+A+Kinetics+and+Total+Body+Stores+among+Ghanaian+Women+of+Reproductive+Age%5BTitle%5D)+AND+%22Curr+Dev+Nutr%22%5BJournal%5D)">Use of Population-Based Compartmental Modeling and Retinol Isotope Dilution to Study Vitamin A Kinetics and Total Body Stores among Ghanaian Women of Reproductive Age.</a> Curr Dev Nutr. 8 (11), 104484(2024).</li>
<li>Haskell, M. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Population-based+plasma+kinetics+of+an+oral+dose+of+%5B2H4%5Dretinyl+acetate+among+preschool-aged%2C+Peruvian+children%5BTitle%5D)+AND+%22Am+J+Clin+Nutr%22%5BJournal%5D)">Population-based plasma kinetics of an oral dose of [2H4]retinyl acetate among preschool-aged, Peruvian children.</a> Am J Clin Nutr. 77 (3), 681-686 (2003).</li>
<li>Lopez-Teros, V., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Use+of+a+%26%2334%3BSuper-child%27%27+Approach+to+Assess+the+Vitamin+A+Equivalence+of+Moringa+oleifera+Leaves%2C+Develop+a+Compartmental+Model+for+Vitamin+A+Kinetics%2C+and+Estimate+Vitamin+A+Total+Body+Stores+in+Young+Mexican+Children%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">Use of a &#34;Super-child'' Approach to Assess the Vitamin A Equivalence of Moringa oleifera Leaves, Develop a Compartmental Model for Vitamin A Kinetics, and Estimate Vitamin A Total Body Stores in Young Mexican Children.</a> J Nutr. 147 (12), 2356-2363 (2017).</li>
<li>Oxley, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((An+LC%2FMS%2FMS+method+for+stable+isotope+dilution+studies+of+beta-carotene+bioavailability%2C+bioconversion%2C+and+vitamin+A+status+in+humans%5BTitle%5D)+AND+%22J+Lipid+Res%22%5BJournal%5D)">An LC/MS/MS method for stable isotope dilution studies of beta-carotene bioavailability, bioconversion, and vitamin A status in humans.</a> J Lipid Res. 55 (2), 319-328 (2014).</li>
<li>Ribaya-Mercado, J. D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Quantitative+assessment+of+total+body+stores+of+vitamin+A+in+adults+with+the+use+of+a+3-d+deuterated-retinol-dilution+procedure%5BTitle%5D)+AND+%22Am+J+Clin+Nutr%22%5BJournal%5D)">Quantitative assessment of total body stores of vitamin A in adults with the use of a 3-d deuterated-retinol-dilution procedure.</a> Am J Clin Nutr. 77 (3), 694-699 (2003).</li>
<li>Tang, G. W., Qin, J., Hao, L. Y., Yin, S. A., Russell, R. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Use+of+a+short-term+isotope-dilution+method+for+determining+the+vitamin+A+status+of+children%5BTitle%5D)+AND+%22Am+J+Clin+Nutr%22%5BJournal%5D)">Use of a short-term isotope-dilution method for determining the vitamin A status of children.</a> Am J Clin Nutr. 76 (2), 413-418 (2002).</li>
<li>Oxley, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Determination+of+Vitamin+A+Total+Body+Stores+in+Children+from+Dried+Serum+Spots%3A+Application+in+a+Low-+and+Middle-Income+Country+Community+Setting%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">Determination of Vitamin A Total Body Stores in Children from Dried Serum Spots: Application in a Low- and Middle-Income Country Community Setting.</a> J Nutr. 151 (5), 1341-1346 (2021).</li>
<li>Oxley, A., Lietz, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Use+of+stable+isotopes+to+study+bioconversion+and+bioefficacy+of+provitamin+A+carotenoids%5BTitle%5D)+AND+%22Methods+Enzymol%22%5BJournal%5D)">Use of stable isotopes to study bioconversion and bioefficacy of provitamin A carotenoids.</a> Methods Enzymol. 670, 399-422 (2022).</li>
<li>Preston, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Existing+and+emerging+technologies+for+measuring+stable+isotope+labelled+retinol+in+biological+samples%3A+isotope+dilution+analysis+of+body+retinol+stores%5BTitle%5D)+AND+%22Int+J+Vitam+Nutr+Res%22%5BJournal%5D)">Existing and emerging technologies for measuring stable isotope labelled retinol in biological samples: isotope dilution analysis of body retinol stores.</a> Int J Vitam Nutr Res. 84 (Suppl 1), 30-39 (2014).</li>
<li>Tang, G. W., Qin, J., Dolnikowski, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Deuterium+enrichment+of+retinol+in+humans+determined+by+gas+chromatography+electron+capture+negative+chemical+ionization+mass+spectrometry%5BTitle%5D)+AND+%22J+Nutr+Biochem%22%5BJournal%5D)">Deuterium enrichment of retinol in humans determined by gas chromatography electron capture negative chemical ionization mass spectrometry.</a> J Nutr Biochem. 9 (7), 408-414 (1998).</li>
<li>Wang, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Vitamin+A+equivalence+of+spirulina+beta-carotene+in+Chinese+adults+as+assessed+by+using+a+stable-isotope+reference+method%5BTitle%5D)+AND+%22Am+J+Clin+Nutr%22%5BJournal%5D)">Vitamin A equivalence of spirulina beta-carotene in Chinese adults as assessed by using a stable-isotope reference method.</a> Am J Clin Nutr. 87 (6), 1730-1737 (2008).</li>
<li>Gannon, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Biofortified+orange+maize+is+as+efficacious+as+a+vitamin+A+supplement+in+Zambian+children+even+in+the+presence+of+high+liver+reserves+of+vitamin+A%3A+a+community-based%2C+randomized+placebo-controlled+trial%5BTitle%5D)+AND+%22Am+J+Clin+Nutr%22%5BJournal%5D)">Biofortified orange maize is as efficacious as a vitamin A supplement in Zambian children even in the presence of high liver reserves of vitamin A: a community-based, randomized placebo-controlled trial.</a> Am J Clin Nutr. 100 (6), 1541-1550 (2014).</li>
<li>Green, M. H., Lopez-Teros, V., Green, J. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Does+the+Amount+of+Stable+Isotope+Dose+Influence+Retinol+Kinetic+Responses+and+Predictions+of+Vitamin+A+Total+Body+Stores+by+the+Retinol+Isotope+Dilution+Method+in+Theoretical+Children+and+Adults%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">Does the Amount of Stable Isotope Dose Influence Retinol Kinetic Responses and Predictions of Vitamin A Total Body Stores by the Retinol Isotope Dilution Method in Theoretical Children and Adults.</a> J Nutr. 152 (1), 86-93 (2022).</li>
<li>Ribaya-Mercado, J. D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Bioconversion+of+plant+carotenoids+to+vitamin+A+in+Filipino+school-age+children+varies+inversely+with+vitamin+A+status%5BTitle%5D)+AND+%22Faseb+J%22%5BJournal%5D)">Bioconversion of plant carotenoids to vitamin A in Filipino school-age children varies inversely with vitamin A status.</a> Faseb J. 14 (4), A486-A486 (2000).</li>
<li>Valentine, A. R., Davis, C. R., Tanumihardjo, S. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Vitamin+A+isotope+dilution+predicts+liver+stores+in+line+with+long-term+vitamin+A+intake+above+the+current+Recommended+Dietary+Allowance+for+young+adult+women%5BTitle%5D)+AND+%22Am+J+Clin+Nutr%22%5BJournal%5D)">Vitamin A isotope dilution predicts liver stores in line with long-term vitamin A intake above the current Recommended Dietary Allowance for young adult women.</a> Am J Clin Nutr. 98 (5), 1192-1199 (2013).</li>
<li>Hemery, Y. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Influence+of+light+exposure+and+oxidative+status+on+the+stability+of+vitamins+A+and+D3+during+the+storage+of+fortified+soybean+oil%5BTitle%5D)+AND+%22Food+Chem%22%5BJournal%5D)">Influence of light exposure and oxidative status on the stability of vitamins A and D3 during the storage of fortified soybean oil.</a> Food Chem. 184, 90-98 (2015).</li>
<li>Shahidi, F., de Camargo, A. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Tocopherols+and+Tocotrienols+in+Common+and+Emerging+Dietary+Sources%3A+Occurrence%2C+Applications%2C+and+Health+Benefits%5BTitle%5D)+AND+%22Int+J+Mol+Sci%22%5BJournal%5D)">Tocopherols and Tocotrienols in Common and Emerging Dietary Sources: Occurrence, Applications, and Health Benefits.</a> Int J Mol Sci. 17 (10), (2016).</li>
<li>Liu, Z., Lee, H. J., Garofalo, F., Jenkins, D. J. A., El-Sohemy, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Simultaneous+Measurement+of+Three+Tocopherols%2C+All-trans-retinol%2C+and+Eight+Carotenoids+in+Human+Plasma+by+Isocratic+Liquid+Chromatography%5BTitle%5D)+AND+%22J+Chromatograph+Sci%22%5BJournal%5D)">Simultaneous Measurement of Three Tocopherols, All-trans-retinol, and Eight Carotenoids in Human Plasma by Isocratic Liquid Chromatography.</a> J Chromatograph Sci. 49 (3), 221-227 (2011).</li>
<li>Davies, P. S. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Stable+isotopes%3A+their+use+and+safety+in+human+nutrition+studies%5BTitle%5D)+AND+%22Eur+J+Clin+Nutr%22%5BJournal%5D)">Stable isotopes: their use and safety in human nutrition studies.</a> Eur J Clin Nutr. 74 (3), 362-365 (2020).</li>
<li>Haskell, M. J., Ribaya-Mercado, J. D. <a target="_blank" href="http://scholar.google.com/scholar?hl=en&safe=off&q=author%3aHaskell%2C+MJ+%22Handbook+on+Vitamin+A+Tracer+Dilution+Methods+to+Assess+Status+and+Evaluate+Intervention+Programs%22">Handbook on Vitamin A Tracer Dilution Methods to Assess Status and Evaluate Intervention Programs</a>. , Harvest Plus Technical Monographs. (2005).</li>
<li>Han, S. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Quantitative+characterization+of+degradation+behaviors+of+antioxidants+stabilized+in+lipid+particles%5BTitle%5D)+AND+%22Talanta%22%5BJournal%5D)">Quantitative characterization of degradation behaviors of antioxidants stabilized in lipid particles.</a> Talanta. 71 (5), 2129-2133 (2007).</li>
<li>Park, H., Mun, S., Kim, Y. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((UV+and+storage+stability+of+retinol+contained+in+oil-in-water+nanoemulsions%5BTitle%5D)+AND+%22Food+Chem%22%5BJournal%5D)">UV and storage stability of retinol contained in oil-in-water nanoemulsions.</a> Food Chem. 272, 404-410 (2019).</li>
<li>Retinol 50C, 15D and 10S. , BASF. 
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<li>Green, M. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/pubmed?term=((Plasma+Retinol+Kinetics+and+beta-Carotene+Bioefficacy+Are+Quantified+by+Model-Based+Compartmental+Analysis+in+Healthy+Young+Adults+with+Low+Vitamin+A+Stores%5BTitle%5D)+AND+%22J+Nutr%22%5BJournal%5D)">Plasma Retinol Kinetics and beta-Carotene Bioefficacy Are Quantified by Model-Based Compartmental Analysis in Healthy Young Adults with Low Vitamin A Stores.</a> J Nutr. 146 (10), 2129-2136 (2016).</li>
</ol>

<table><tbody><tr><td>Frascos de vidrio ámbar de 2 ml para alicuar dosis</td><td>Fisher</td><td>11573690</td><td>Dependiendo del tamaño de la muestra del estudio y de la cantidad de voluntarios que se administren diariamente, puede ser más eficiente utilizar viales ámbar más grandes, por ejemplo, de 4 ml,</td></tr><tr><td>Matrazas volumétricas de 100 ml</td><td>Fisher</td><td>11323644</td><td>Matraz volumétrico certificado Pyrex Borosilicato Clase A</td></tr><tr><td>Frascos volumétricos de 50 ml</td><td>Fisher</td><td>11313644</td><td>Matraz volumétrico certificado Pyrex Borosilicato Clase A</td></tr><tr><td>Balanzas analíticas &nbsp;</td><td>Fisher</td><td>13592970</td><td></td></tr><tr><td>Pistones capilares (puntas de pipeta) CP100 10x96 TIPACK</td><td>Gilson</td><td>FD148314</td><td></td></tr><tr><td>Pistones capilares CP1000ST 2x91</td><td>Gilson</td><td>F148180</td><td></td></tr><tr><td>Pistones capilares CP250ST 6x96</td><td>Gilson</td><td>F148714</td><td></td></tr><tr><td>Criocaja de cartón</td><td>Starlab</td><td>A9623-8181</td><td></td></tr><tr><td>Cuvette Hellma cuvette cuarzo UV</td><td>SLS</td><td>CEL1600</td><td></td></tr><tr><td>Hexano 95% N-Hexano para HPLC Certificado HPLC</td><td>Fisher</td><td>H/0406/17</td><td></td></tr><tr><td>Tapas para viales de vidrio ámbar de 2 ml</td><td>Fisher</td><td>11573542</td><td></td></tr><tr><td>Microman E M1000E Pipeta (desplazamiento positivo)</td><td>Gilson</td><td>FD10006</td><td></td></tr><tr><td>Microman E M100E Pipeta (desplazamiento positivo)</td><td>Gilson</td><td>FD10004</td><td></td></tr><tr><td>Microman E M250E Pipeta (desplazamiento positivo)</td><td>Gilson</td><td>FD10005</td><td></td></tr><tr><td>Microscopio</td><td>Nikon</td><td>Eclipse E400</td><td></td></tr><tr><td>Portaobjetos de vidrio para microscopio &nbsp;</td><td>Sigma</td><td>41122601</td><td></td></tr><tr><td>Baños de agua sónicos</td><td>VWR</td><td>USC100T</td><td></td></tr><tr><td>Espectrofotómetro</td><td>Thermo Fisher Scientific</td><td>A51119600C</td><td></td></tr><tr><td>Trazador estable marcado con acetato de retinilo marcado por isótopos</td><td>Buchem BV</td><td>N/A</td><td>Se puede utilizar una variedad de isótopos estables para el método de DRI. Una lista de diferentes isótopos disponibles comercialmente se presenta en la Tabla 1. &nbsp;</td></tr><tr><td>Baño de agua sin remover</td><td>SLS</td><td>SLS1176</td><td></td></tr><tr><td>Aceite vegetal</td><td>Cualquier supermercado</td><td>N/A</td><td>Es importante utilizar aceite vegetal fresco con una vida útil suficiente para preparar dosis de isótopos.</td></tr><tr><td>Pipeta pasteur de vidrio desconectado Volac 150mm</td><td>SLS</td><td>PIP4150</td><td></td></tr></tbody></table>

formulación de dosis trazadoras de vitamina a para administración a sujetos humanos mediante la técnica de dilución de isótopos de retinol

Formulation of Vitamin A Tracer Doses for Administration to Human Subjects using Retinol Isotope Dilution Technique

Formulación de dosis trazadoras de vitamina A para administración a sujetos humanos mediante la técnica de dilución de isótopos de retinol

The retinol isotope dilution (RID) technique relies on the administration of isotopically labeled vitamin A tracers to human subjects. Here, we present a ...

formulation-vitamin-tracer-doses-for-administration-to-human-subjects

Research

Investigación

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Biochemistry

Bioquímica

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Análisis cuantitativo de los metabolitos dietéticos de la vitamina A en tejidos oculares y no oculares murinos mediante cromatografía líquida de alta resolución

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La retina humana está conformada por las regiones funcionalmente y molecularmente distintas, incluyendo la fóvea, mácula y retina periférica. Aquí, describimos un método utilizando las biopsias del sacador y extracción manual de las capas de tejido de un ojo humano para diseccionar y recoger estas regiones retinianas distintas para análisis proteómico aguas abajo.

Disección de la Retina humana y RPE-coroides para análisis proteómico

Describimos en detalle dos protocolos basados en químicos para el cultivo de células madre embrionarias de ratón. Este nuevo método utiliza mecanismos sinérgicos de promover oxidación mediada por Tet (vitamina C) y reprimiendo la síntesis de novo de la 5-METILCITOSINA (por PD0325901) para mantener el hypomethylation de la DNA y pluripotencia de células madre embrionarias de ratón.

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Newcastle University.  La preparación de vitamina A estable marcada con isótopos, necesaria para la técnica de dilución de isótopos de retinol, debe cumplir con las normas de seguridad alimentaria. El protocolo muestra la preparación de la dosificación en aceite vegetal en concentraciones que serán adecuadas para el sistema de administración elegido y la plataforma analítica aplicada.

Formulación de dosis trazadoras de vitamina A para administración a sujetos humanos mediante la técnica de dilución de isótopos de retinol

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