Figure 2.

Relative levels of gene products (mRNAs) for selected local vascular factors and receptors in the macaque corpus luteum as a function of the stage of luteal phase during the menstrual cycle. Mid luteal phase corresponds to the developed corpus luteum. At mid-late luteal phase, the corpus luteum is on the verge of regression. Late and very late (menstruation) luteal phase corresponds to functional and structural regression, respectively. Data adapted from [37, 42, 107] see references for further details on tissue staging and collection.