Stem Tissue Harvesting
Stem Tissue Harvesting - Related Videos
12:29
Sterile Tissue Harvest
0 Views •
2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN In 1959 The 3 R's were introduced by W.M.S. Russell and R.L. Burch in their book The Principles of Humane Experimental Technique. The 3 R's are replacement, reduction, and refinement of the use of animals in research. The use of cell lines and tissue cultures that originated from research animals is a replacement technique, as it allows for many experiments to be conducted in vitro. Harvesting...
21:15
Diagnostic Necropsy and Tissue Harvest
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN Many animal experiments rely on final data collection time points that are gathered from the harvesting and testing of organs and tissues. The use of appropriate methods for the collection of organs and tissues can impact the quality of the samples and the analysis of the data that is gleaned for the testing of the tissues. The method of euthanasia of the animal can also impact the quality of...
07:49
Isolating Stem Cells from Soft Musculoskeletal Tissues
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Cited by 21 •
2010
Isolating adult stem cells from musculoskeletal soft tissues based on the cell's adherence speed to flask.
07:06
Tissue Regeneration with Somatic Stem Cells
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2023
Somatic or adult stem cells, like embryonic stem cells, are capable of self-renewal but demonstrate a restricted differentiation potential. Nonetheless, these cells are crucial to homeostatic processes and play an important role in tissue repair. By studying and manipulating this cell population, scientist may be able to develop new regenerative therapies for injuries and diseases. This video first defines somatic stem cells, and then explores the role these cells play in tissue regeneration.
06:06
Apparatus for Harvesting Tissue Microcolumns
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Cited by 7 •
2018
Here we describe a protocol for producing harvesting needles that can be used to collect full-thickness skin tissue without causing donor site scarring. The needles can be combined with a simple collection system to achieve high-volume harvesting.
FAQs
Tissue age and position influence the biological information recovered from a sample. Different stem regions may reflect distinct developmental states, while tissue condition affects whether cells and nucleic acids remain suitable for analysis. Recording these features helps researchers compare samples consistently and interpret differences as biological variation rather than sampling effects.
Sterile handling limits microbial contamination that can compromise harvested material and obscure genetic results. It also reduces physical damage and dehydration, which helps preserve tissue integrity during collection and transfer. This is especially important when the sample must yield intact DNA or RNA, or retain viable cells for later work.
The intended downstream analysis determines which form of integrity matters most. DNA quality supports genotyping, RNA preservation supports gene-expression studies, and cell viability matters for propagation or experiments requiring living material. Thus, a visibly similar stem sample can have different value depending on the genetic question and the required type of material.
A reliable workflow begins by selecting a stem region with a defined age, position, and condition. The region is removed with sterile instruments, then protected from contamination, dehydration, and unnecessary mechanical injury. Maintaining these conditions from excision through processing preserves the characteristics that made the sample suitable and improves consistency between specimens.
Sampling strategy should follow the intended use. Material for genotyping must support DNA recovery, whereas gene-expression work depends on preserving RNA and tissue-specific information. If researchers need propagation or viable cells, maintaining cellular viability becomes central. Matching the stem region and handling conditions to the assay helps prevent unsuitable material from reaching the final experiment.
In genetics, harvested stem material can connect physical tissue differences with heredity, genetic variation, and developmental traits. Comparing samples from defined stem regions allows investigators to examine tissue-specific biological processes, while preserved material can support genotyping or expression analysis. Results are most interpretable when sampling position, tissue condition, and handling remain consistent across specimens.