1.   COGME has recommended that all physicians need an understanding of basic female physiology and reproductive biology.

2.   Dr. Calderone then resigned from Planned Parenthood to turn her attention from reproductive biology to education in human sexuality.

3.   However, pig reproductive biology presented some daunted technical problems for cloning pioneers.

4.   Standing unexpectedly at the forbidden frontiers of reproductive biology, everyone is apparently more alarmed than amused.

5.   The United States has for years restricted federal funding of research into human reproductive biology.