Menstruation, periodic discharge from the vagina of blood, secretions, and disintegrating mucous membrane that had lined the uterus. 1  The biological significance of the process in humans can best be explained by reference to the reproductive function in other mammals.
Chlamydia is a common sexually transmitted disease (STD) caused by infection with Chlamydia trachomatis. It can cause cervicitis in women and urethritis and proctitis in both men and women.
Chlamydia genital infection is a sexually transmitted disease (STD) caused by the bacteria Chlamydia trachomatis. In fact, C. trachomatis is the most common sexually transmitted bacterial infection in the world. About 70% of genital infections are associated with few or no symptoms.