<prompt> A 21-year-old girl is having vaginal discharge one week after unprotected sexual intercourse. The smear of vaginal discharge is shown below. All are diagnostic criteria for the condition shown except:Vaginal pH4.5Positive whiff testClue cells 20 of cellsPresence of more Gardnerella with few lactobacillus  <response>: Ans. A. Vaginal pH4.5The image shows vaginal epithelial cells covered with coccobacilli, leading to stippled appearance of the cell. This appearance is called Clue cell and is diagnostic of bacterial vaginosis. 