11. A well-developed vascular supply also grows into the corpus luteum . 12. Very rarely, the corpus luteum may form a cyst. 13. From this point on, the corpus luteum is called the " corpus luteum graviditatis ". 14. This allows the corpus luteum to capillaries so that it can sustain the growing fetus. 15. From this point on, the corpus luteum is called the " corpus luteum graviditatis ". 16. It causes functional and morphological regression of the corpus luteum ( luteolysis ) in cattle. 17. Action of PGF 2? is dependent on the number of receptors on the corpus luteum membrane. 18. In 1968, a report indicated that beta-carotene was synthesized in laboratory conditions in slices of corpus luteum from cows. 19. It acts on the corpus luteum to cause luteolysis, forming a corpus albicans and stopping the production of progesterone. 20. As the corpus luteum is being broken down by macrophages, fibroblasts lay down type I collagen, forming the corpus albicans.
