Male fertility rates have been plummeting over the past half-century. An analysis from 1992 noted a steady decrease in sperm ...

Toxoplasma: Some sperm cells had holes in their head, suggesting the parasites were trying to invade them as it would any ...

The many ways you can get toxoplasmosis Infected cats defecate Toxoplasma eggs into the litter ... what happens when the parasite comes into direct contact with human sperm in a test tube.

Infected cats defecate Toxoplasma eggs into the litter box ... the team to test what happens when the parasite comes into direct contact with human sperm in a test tube. After only five minutes ...