teratoma. [terâ²ÉtÅâ²mÉ] pl. teratomas, teratomata. a tumor composed of different kinds of tissue, none of which normally occurs together or at the site of the tumor. Teratomas are most common in the ovaries or testes.
The pink-colored film or ring frequently seen on showers, tubs, toilets and pet water bowls is typically caused by growth of the airborne bacteria Serratia marcesens. This harmless nuisance organism reacts with standing water and frequently forms during spring and summer months.
The most likely cause is an airborne bacteria called Serratia Marcescens. This bacteria is common and generally grows in damp conditions such as those found in bathrooms and kitchens. Serratia produces a pinkish film on surfaces that are regularly moist and subject to humid conditions.he most likely cause is an airborne bacteria called Serratia Marcescens. This bacteria is common and generally grows in damp conditions such as those found in bathrooms and kitchens. Serratia produces a pinkish film on surfaces that are regularly moist and subject to humid conditions.