Answer :
Final answer:
Sebaceous glands produce sebum to lubricate and waterproof the skin and hair, with a tumor in these glands termed steatoma or sebaceous tumor.
Explanation:
Sebaceous glands are oil glands found in the skin that produce sebum, an oily substance that helps lubricate and waterproof the skin and hair. When a tumor forms in these glands, it is known as a steatoma or sebaceous tumor.
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