The triiodothyronine antagonistic effect of gamma-L-glutamyl-taurine (litoralon).

: A recently recognized bioactive substance of the parathyroid glands, gamma-L-glutamyl-taurine antagonises the metamorphosis enhancing effect of triiodothyronine. Shortening of the body-length of tadpoles is significantly delayed by the substance. The experimental results imply that it fulfills the role of a balance hormone.