“…Other investigators have reported pituitary LH concentrations throughout pregnancy (Greenwald, 1966;Schwartz and Talley, 1968), pseudopregnancy (Schwartz and Rothchild, 1964) and on several isolated days of prolonged pseudopregnancy with hysterectomy (Labhsetwar, 1967;Christian, Yuan, and Rothchild, 1968), Their results obtained with the OAAD biossay are relatively similar to those presented here.…”