题目内容

Which state is not right about rheumatic heart disease caused by Streptococcus?

A. It is an autoimmune response which leads to damage of heart valves
B. Streptococcus pyogenes release exotoxin cause damage to heart valves
C. Anti-O test can facilitate the diagnosis of rheumatic heart disease
D. Treatment of strptococcal infection with antibiotics reduced the morbidity of rheumatic heart disease

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Which disease is not caused by Streptococcus?

A. scarlet fever,
B. glomerulonephritis,
C. rheumatic heart disease,
D. enteritis,

Which statement is right about Streptococcus?

Arranged in Y letter;
B. Arranged in chain,
C. arranged in a cluster of grapes;
D. It has O-antigen,

Which statement is not right about streptococcus?

A. Gram positve;

B. obligate anaerobe,

C. It has no spore;

D. It has no flagellum


Which bacteria can not cause hemolysis on bloody agar plate?

A. Streptococcus varidans,
B. Streptococcus pyogenes,
C. Streptococcus nonhemolyticus
D. Staphylococcus aureus.

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