Streptococcus pyogenes infections?

Which of the following infection(s) can be diagnosed by the use of polymerase chain reaction?

A.	HIV-1 and HIV-2 viruses
B.	Hepatitis B virus
C.	Mycobacterium tuberculosis
D.	All of these

[#]
10. Which of the following theory of antibody production is most widely accepted?

A.	Side chain theory
B.	Clonal selection theory
C.	Direct template theory
D.	Indirect template theory

[#]
11. Negative phase is observed in

A.	secondary humoral response
B.	primary humoral response
C.	both (a) and (b)
D.	none of the above

[#]
12. Which of the following condition is non-suppurative sequelae of Streptococcus pyogenes infections?

A.	Acute rheumatic fever
B.	Acute glomerulonephritis
C.	Erythema nodosum
D.	All of these