Alas, there are no homunculi crammed inside the smallest human cells. Yet recent research in fertility and urology suggests Hartsoeker’s image could work metaphorically: Sperm can be a proxy for the ...

A semen analysis can help your doctor diagnose fertility issues. A sample is looked at under a microscope to see how many sperm cells it contains, how they're shaped, and how well they move. (Photo ...

A semen analysis is a laboratory test used to assess the quality and health of a man’s sperm. It is commonly performed to ...

Why Have a Semen Analysis? If you and your partner are having trouble getting pregnant, one of the first tests your doctor will likely ask for is a semen analysis. While both men and women can have ...