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.
I have this pink stain as a ring around the top of my water line in my toilet bowl. I have tried bleach tank drop ins with no success. Is there an effective tank drop in for these stains? I don't like those kind that hang on the side of the bowl and i don't like scrubbing those stains away every day either!