Absence of corpus luteum rescue by chorionic gonadotropin in women immunized with a contraceptive vaccine  Rahul Pal, Ph.D., Om Singh, Ph.D.  Fertility.

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Absence of corpus luteum rescue by chorionic gonadotropin in women immunized with a contraceptive vaccine  Rahul Pal, Ph.D., Om Singh, Ph.D.  Fertility and Sterility  Volume 76, Issue 2, Pages 332-336 (August 2001) DOI: 10.1016/S0015-0282(01)01897-0

Figure 1 Serum progesterone and urinary hCG concentrations in three nonimmunized (control) women who received increasing doses of hCG beginning day 9 after the LH peak. • = progesterone; ○ = hCG. Pal. Absence of corpus luteum rescue by hCG vaccination. Fertil Steril 2001. Fertility and Sterility 2001 76, 332-336DOI: (10.1016/S0015-0282(01)01897-0)

Figure 2 Serum progesterone and urinary hCG concentrations in three immunized women who received increasing doses of hCG beginning day 9 after the LH peak. The hCG neutralization capacity of sera (ng/mL): (A) 6, (B) 5, (C) 1. • = progesterone; ○ = hCG. Pal. Absence of corpus luteum rescue by hCG vaccination. Fertil Steril 2001. Fertility and Sterility 2001 76, 332-336DOI: (10.1016/S0015-0282(01)01897-0)

Figure 3 Serum progesterone and urinary hCG concentrations in three immunized women who received increasing doses of hCG beginning on day 9 after the LH peak. The hCG neutralization capacity of sera (ng/mL): (A) 50, (B) 40, (C) 100. • = progesterone; ○ = hCG. Pal. Absence of corpus luteum rescue by hCG vaccination. Fertil Steril 2001. Fertility and Sterility 2001 76, 332-336DOI: (10.1016/S0015-0282(01)01897-0)