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67007 Microbiology

True statements about Pneumococcus are all except-

APneumolysin a thiolactivated toxin, exerts a variety of effect on ciliary & PMN's
BAutolysin may contribute to the pathogenesis of pneumococcal disease by lysing the bacteria
CAnticapsular antibodies are serotype specific
DThe virulence of pneumococci is dependent only on the production of the capsular polysaccharide
Microbiology
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67011 Ophthalmology

A young man aged 30 years, presents with difficulty in vision in the left eye for the last 10 days. He is immunocompetent, a farmer by occupation, comes from a rural community and gives history of trauma to his left eye with vegetative matter 10-15 days back. On examination, there is an ulcerative lesion in the cornea, whose base has raised soft creamy infiltrate. Ulcer margin is feathery and hyphate. There are a few satellite lesions also. The most probable etiological agent is:

AAcanthamoeba
BCorynebacterium diphtheriae
CFusarium
DStreptococcus pneumoniae
Ophthalmology
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