Progesterone is a hormone released by the corpus luteum in the ovary. It plays important roles in the menstrual cycle and in maintaining the early stages of pregnancy. It may also be involved in the growth of certain cancers.
I've been following various people's posts about the GRE for 10 months now. Some people don't study at all for the GRE, some study for a weekend, the average is about 2 to 3 months, and some study for a year or more.
DEFINITION of 'Graduate Record Examination-GRE'. A standardized exam used to measure one's aptitude for abstract thinking in the areas of analytical writing, mathematics and vocabulary. The GRE is commonly used by many graduate schools to determine an applicant's eligibility for the program. The GRE is only offered via computer, however in areas which lack the appropriate computer networks, a paper-based exam may be given. Next Up.