Mycoplasma hominis is a species of bacteria in the genus Mycoplasma. M. hominis has the ability to penetrate the interior of human cells. Along with ureaplasmas, mycoplasmas are the smallest free-living organisms known. They have no cell wall and therefore do not Gram stain. Mycoplasma hominis is associated with pelvic inflammatory disease and bacterial vaginosis. It is also associated with male infertility. This species causes a sexually transmitted infection. It is susceptible to the antibiotic clindamycin. Growth of "fried egg" colonies on glucose agar medium within 24–48 hours is a characteristic of Mycoplasma hominis. This pathogen may latently infect the chorionic villi tissues of pregnant women, thereby impacting pregnancy outcome. Source: Wikipedia (en)