1. Concentrations of inhibins and activin in women undergoing stimulation with recombinant follicle-stimulating hormone for in vitro fertilization treatment 
Fritz W Casper, M.D., Rudolf J Seufert, M.D., Michael Schaffrath, M.D., Kunhard Pollow, M.D. 
Fertility and Sterility 
Volume 75, Issue 1, Pages (January 2001)
DOI: /S (00)01637-X

2. Figure 1
Follicle size was significantly correlated (P<.01) with serum levels of pro alpha-C, inhibin A, inhibin B, and estradiol on day 7 of recombinant FSH treatment.
Casper. Inhibins and activin in FSH stimulation. Fertil Steril 2001.
Fertility and Sterility  , 32-37DOI: ( /S (00)01637-X)