buccal smear


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buc·cal smear

a cytologic smear containing material obtained by scraping the lateral buccal mucosa above the dentate line, smearing, and fixing immediately; used principally for determining somatic sex as indicated by the presence of the sex chromocenter (Barr body).

buccal smear

a sample of cells removed from the buccal mucosa for purposes of obtaining a karyotype to determine the genetic sex of an individual.

buccal smear

A convenient way to obtain cells for chromosomal and other studies and to obtain a sample of DNA. The inside of the cheek is gently scraped with a spatula and the cells spread on a glass slide.

buc·cal smear

(bŭkăl smēr)
Cytologic smear containing material obtained by scraping the lateral buccal mucosa above the dentate line, smearing, and fixing immediately; used principally for determining somatic sex as indicated by the presence of the sex chromocenter (Barr body).