What type of perspiration-producing gland that produces a secretion containing proteins and fats?

The type of perspiration-producing gland that produces a secretion containing proteins and fats is called an apocrine gland. Apocrine glands are larger and less numerous than eccrine glands and are primarily located in the armpits, groin, and around the nipples. They are activated during puberty by androgens and produce a milky, viscous secretion containing proteins, lipids, and steroids. This secretion is odorless when initially produced but can be broken down by bacteria on the skin, leading to the characteristic body odor associated with apocrine sweat.