has part has part has_part characteristic of part of has modifier abnormal male preputial gland morphology abnormal morphology of Tyson's glands MPheno.ontology any structural anomaly of the paired, lobulated, modified sebaceous glands of the corona, the neck of the glans penis, and the inner surface of the prepuce with pheromonal functions in male rodents; male preputial secretions strongly attract females, may accelerate estrus, and have been implicated in intermale aggression; homologous to the clitoral glands (aka female preputial glands) in female rodents; there is no true anatomical equivalent in humans abnormal Tyson's gland morphology MP:0002717 abnormal glans penis morphology abnormal male reproductive gland morphology abnormal preputial gland morphology morphology abnormal male preputial gland