It is true that the limb, eye and gut malformations that are plaguing frogs are generally not manifested in humans. But it is important to realize that circumstances of development are different between humans and frogs, and that we might reasonably expect different exposure regimes to produce different developmental manifestations. References Kaiser, J. 1997. Deformed frogs leap into spotlight at health workshop. Souder, W. 1997.
Colleagues say frog deformities researchers leaped too soon.