different between allantois vs allantoin

English

Ancient Greek ???????????? (allantoeid?s, “sausage-shaped”). See ?????????.

allantois (plural allantoises or allantoides)

(anatomy) A sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles.

allantois +? -in; this substance concentrates in the allantois during development in most mammals.

allantoin (plural allantoins)

(biochemistry) A diureide of glyoxylic acid, used in various pharmaceutical and cosmetic products; or a derivative of this compound

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