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Paraffin skin sections from various depths of tissue from healthy humans, pigs, rats and mice were simultaneously subjected to H&E staining for structural comparisons. Representative images from each of the four species are shown with the same magnification scale. EP, epidermis; DM, dermis; BV, blood vessel; SB, sebaceous gland, HF, hair follicle, AP, apocrine (sweat) gland; and M, muscle. The measurement bars are as indicated.
