Citation: Ak. Mishra et al., Mapping the receptor binding regions of human chorionic gonadotropin (hCG)using disulfide peptides of its beta-subunit: possible involvement of the disulfide bonds Cys(9)-Cys(57) and Cys(23)-Cys(72) in receptor binding of the hormone, J PEPT RES, 58(1), 2001, pp. 17-26