The pouch at the base of the penis that contains the testicles.
An infection or disease passed from person to person through sexual contact.
The microscopic cell that carries the male's genetic information to the female's egg. The male reproductive cell. The male gamete.
The number of sperm in an ejaculate. Also called sperm concentration and given as the number of sperm per milliliter.
The production of sperm.
A condition that prevents conception.
Administration of medication with a fine small needle just below the surface of the skin, into fatty tissue.
A needle designed to administer medication just below the surface of the skin, into the fatty tissue.