8. Individuals suffering from primary atypical pneumonia have agglutinins to
A.Streptococcus MG
B.S avium
C.S mutans
D.Enterococcus faecalis
9. Which of the following test(s) may establish retrospective diagnosis of streptococcal infection?
A.Anti-DNase B test
B.ASO test
C.Streptozyme test
D.All of these
10. The bacterial sore throat is caused by
A.Staphylococcus aureus
B.Haemophilus spp
C.Streptococcus pyogenes
D.Mycoplasma pneumoniae
11. Crystal violet blood agar is a selective medium for
A.β-haemolytic streptococci
B.Staphylococcus aureus
C.Corynebacterium diphtheriae
D.Mycobacterium tuberculosis
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