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523 Microbiology

The sputum specimen of a 70 year old male was cultured on a 5% blood agar. The culture showed the presence of a-hemolytic colonies next day. The fuher processing of this organism is most likely to yield:-

AGram-positive cocci in sho chains, catalase negative and bile resistant
BGram-positive cocci in pairs, catalase negative and bile soluble
CGram-positive cocci in clusters, catalase positive and coagulase positive
DGram-negative coccobacilli, catalase positive and oxidase positive
Microbiology
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