50.1 MB (1.1 MB compressed)
3425 x 5113 pixels
29.0 x 43.2 cm ⏐ 11.4 x 17.0 in (300dpi)
SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Graafian follicle. Original illustration of a mammalian graafian follicle (upper left, B) in a cow ovary, drawn by its discoverer Regnier de Graaf. Several microscopic ova (eggs) develop within the ovary (upper left) during the menstrual cycle in female mammals. At ovulation a single mature follicle ruptures, releasing the mature ovum into the fallopian tube (in lower frame) where it may be fertilised. The ruptured follicle then becomes a hormone-producing body known as the corpus luteum. Originally published in De Organis Generationem Inservientibus (1672).
Model release not required. Property release not required.