University of Nicolaus Copernicus Torun 2 articles published in JoVE Medicine Using a Chemical Biopsy for Graft Quality Assessment Iga Stryjak*1, Natalia Warmuzińska*1, Kamil Łuczykowski1, Matyas Hamar2, Peter Urbanellis2, Emilia Wojtal3, Marek Masztalerz3, Markus Selzner2,4, Zbigniew Włodarczyk3, Barbara Bojko1 1Department of Pharmacodynamics and Molecular Pharmacology, Faculty of Pharmacy, Nicolaus Copernicus University in Torun, Collegium Medicum in Bydgoszcz, 2Multi Organ Transplant Program, Department of Surgery, Toronto General Hospital, University Health Network, 3Department of Transplantology and General Surgery, Collegium Medicum in Bydgoszcz, Antoni Jurasz University Hospital No. 1 in Bydgoszcz, Nicolaus Copernicus University in Torun, Bydgoszcz, Poland, 4Department of Medicine, Toronto General Hospital The protocol presents utilization of the chemical biopsy approach followed by comprehensive metabolomic and lipidomic analysis for quality assessment of kidney grafts allocated for transplantation. Medicine On-Site Sampling and Extraction of Brain Tumors for Metabolomics and Lipidomics Analysis Joanna Bogusiewicz*1, Paulina Zofia Goryńska*1, Magdalena Gaca1, Kamila Chmara1, Krzysztof Goryński1, Karol Jaroch1, Dariusz Paczkowski2, Jacek Furtak2, Marek Harat2,3, Barbara Bojko1 1Department of Pharmacodynamics and Molecular Pharmacology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 2Department of Neurosurgery, 10th Military Research Hospital and Polyclinic, 3Division of Preventive Medicine and Healthy Policy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun The manuscript presents on-site sampling of human brain tumors with solid phase microextraction followed by their biochemical profiling towards the discovery of biomarkers.