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| Term: | Description: |
|---|---|
| Leydig Cells | cells of the testes responsible for production and secretion of the hormone testosterone. |
| Luteal Phase | second half of the menstrual cycle after ovulation which is usually 14 days in length. It begins with the formation of the corpus luteum and ends with the start of the menstrual flow (if no embryo is implanted during that period). |