The women completed extensive health questionnaires, including questions about reproductive history, age at first period and age of menopause. (sciencedaily.com)
After a one - week recovery, each male was returned to outdoor group housing, which included three to nine intact, breeding females with a successful reproductive history. (sciencedaily.com)
Some had little or no personal experience with pregnancy, while others had complicated reproductive histories. (sciencedaily.com)