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opisthonephros

Term: opisthonephros
Literally meaning: “kidney at last”
Origin: Anc Greek
( όπισθο- )/( opistho- ) = prefix meaning “following, at last” (time) or “behind”(=place)
νεφρός/nephros(-kidney)
Coined/History
In 1919 by Scottish embryologist Grahan Kerr (1869 –1957) best known for his studies of the embryology of lungfishes. Kerr used the term to denote  the lsta stage of the embryonic kidney development in lungfishes. 
Definition
Opisthonephros is the functional adult kidney in cyclostomes, fishes (except Myxini) and amphibians .

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