21.   The researchers said sperm counts may also be related to something else going on in the male reproductive system.

22.   The reproductive systems of up to two-thirds of men are infected with anaerobic bacteria such as Fusobacterium nucleatum and Bacteroides fragilis.

23.   The revival of the hormonal pulse generator of the hypothalamus is essential to the onset of puberty, and in fact to the reproductive system of the adult.

24.   Their soft bodies contain little other than a digestive system and a reproductive system.

25.   They are also believed to harm reproductive systems, immune systems, nervous systems and more.

26.   Weight has long been known to affect the female reproductive system.

27.   When this occurs, the body may respond by shutting off systems that are not essential, like the reproductive system.

28.   Yet how to get the desirable material from a rather nasty predator like a spider into the reproductive system of a kindly animal like a Nubian goat?

29.   Other organs, including their livers and urinary bladders, were also fused, though each had a complete reproductive system.

30.   Each girl has a complete reproductive system, but they shared part of the large intestine and face additional intestinal surgery.