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A 21-year-old student was seen by his family physician with complaints of pharyngitis.

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A 21-year-old student was seen by his family physician with complaints of pharyngitis. Examination of the pharynx revealed patchy erythema and exudates on the tonsillar pillars. Throat smear showed gram-positive cocci in chains and gram-negative diplococci. He admitted to having been sexually active. What is the significance of the Gram stain smear in this case?

(A) It provides a rapid means of diagnosing the infection
(B) It indicates laboratory contamination
(C) It is not useful as it is not possible to make a diagnosis this way
(D) It strongly suggests gonococcal pharyngitis
(E) It is evidence of infection with hemolytic streptococci and Neisseriae

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A