the effect of a combined pure follicle-stimulating hormone/human menopausal gonadotropin ( pfsh/hmg ) ovarian stimulation regimen and modified , sharpened laparoscopic follicular aspiration needles on the number of oocytes retrieved and the oocyte/follicle ratio in 43 consecutive cycles of in vitro fertilization ( ivf ) were retrospectively compared with 99 consecutive preceeding cycles stimulated with hmg alone and captured with aspiration needles that had never been sharpened .
C0029045
oocyte
C0018120
follicle