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 is a disease caused by the bacteria Chlamydia trachomatis. It is most commonly sexually transmitted. Chlamydia can infect the penis, vagina, cervix, anus, urethra, eye, or throat. 1  Chlamydia Symptoms, Test & Treatment. 2  Chlamydia In-Depth. 3  Chlamydia Blog. 4  Pictures of Chlamydia.