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I don't exactly know what you meant to say by "non-functional". Red blood cells are delivering oxygen to tissues, but they cannot do this anymore in the lack of blood flow. White blood cells degenerate and after about 84 hours are no longer existing as cells (Babapulle CJ, Jayasundera NP, 1993). Neutrophiles degenerate first and lymphocytes last. Platelets ...


The terrestrial invertebrate taxon advisory group of the Association of Zoos and Aquariums recommends anesthetizing the insects with carbon dioxide and then placing them in a freezer to euthanize them.

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