Skin - Hyperplasia - Gallery

Epithelial hyperplasia-increased numbers of squamous cells in the epidermis (arrow) and follicular epithelium (arrowheads) in a female B6C3F1 mouse from a 90-day study.

Sebaceous gland hyperplasia-increased numbers of sebocytes forming lobules around central ducts in a male F344/N rat from a 90-day study.