6. Transmission of Molluscum contagiosum virus is through

A. direct contact
B. sexual contact
C. both (a) and (b)
D. none of these

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7. Which of the following viruses are acid-labile?

A. Rhinoviruses
B. Echoviruses
C. Polioviruses
D. Coxsackieviruses

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8. The symmetry of nucleocapsid of poxviruses is/are

A. complex
B. icosahedral
C. helical
D. all of these

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9. The cell lines which can support the growth of polioviruses is/are

A. Human amnion
B. Monkey kidney
C. HeLa
D. All of these

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