2. an area of discoloration of the skin. acid-fast stain a staining procedure for demonstrating acid-fast microorganisms. differential stain one that facilitates differentiation of various elements in a specimen. endogenous stain an intrinsic stain acquired during tooth development.exogenous stain an intrinsic stain acquired after a tooth has erupted.. an area of discoloration of the skin. acid stain. a stain in which the coloring agent is in the acid radical. basic stain. a stain in which the coloring agent is in the basic radical.
Bridgit Mendler took to Twitter on Friday evening (August 16) to clear up the rumors that she is pregnant. âKinda thought the twitter chatter would have died down by now but no, Iâm not pregnant.
Scroll down for video. Co-stars and lovers: Bridgit Mendler said that dating a fellow actor such as her Good Luck Charlie co-star Shane Harper makes romance easier. Bridgit, 20, also said she went all out for the recent Valentine's Day holiday - which also happened to be Shane's 20th birthday. She said: 'Valentineâs Day was really fun!