H. Uchiyama et al., OCCURRENCE OF IMMUNOREACTIVE ACTIVIN INHIBIN BETA(B) IN GONADOTROPHS,THYROTROPHS, AND SOMATOTROPHS OF THE XENOPUS PITUITARY/, General and comparative endocrinology, 102(1), 1996, pp. 1-10
An antibody against the Xenopus activin/inhibin beta(B) subunit (94-10
7) was raised in a rabbit. Using this antibody, the distribution of ac
tivin/inhibin beta(B) immunoreactivity in the pituitary of adult X. la
evis was studied. beta(B) immunoreactivity was detected in gonadotroph
s, thyrotrophs, and somatotrophs under light microscopy. Electron micr
oscopy revealed that a beta(B)-immunoreactive substance exists in LH,
TSH, and GH granules, in contrast to findings in the rat and goldfish.
These results indicate that the expression of activin/inhibin beta(B)
in pituitary cells is not consistent among vertebrate species. (C) 19
96 Academic Press, Inc.