Tissue Preservation

**Definition:** The process by which a tissue or aggregate of cells is kept alive outside of the organism from which it was derived (i.e., kept from decay by means of a chemical agent, cooling, or a fluid substitute that mimics the natural state within the organism).

**Tree numbers:** - E01.370.225.500.620.760 - E01.370.225.750.600.760 - E02.792.833 - E05.200.500.620.760 - E05.200.750.600.760 - E05.760.833