These include lacrimal, parotid, submaxillary, sublingual, preputial and mammary glands. The preputial glands of female animals are sometimes called clitoral glands. The preputial mucosa is devoid of hair, as is the cutaneous surface. When not in use, the penis is retracted inside a preputial sac in the cloaca. It is composed of the preputial mucosa, and is triangular in shape. Diagnosis may rely on microscopic examination of vaginal or preputial smears. There is debate about whether humans have functional homologues to preputial glands. In "Transandinomys talamancae", a single pair of preputial glands is present at the penis. Preputial skin is often used for grafting and circumcision should be avoided before repair.