FRESNO, Calif.FRESNO, Calif. — Biologists are stumped by the mysterious deaths of 104 endangered mountain yellow-legged frogs being bred at a zoo in an effort to reintroduce the species to the wild ...
The African clawed frog (Xenopus laevis) is the most commonly used frog in biological research 1. It is the model amphibian in developmental and molecular biology because, among other characteristics, ...
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