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

  • A
    $HIV-1$ and $HIV-2$ viruses
  • B
    Hepatitis-$B$ virus
  • C
    Mycobacterium tuberculosis
  • D
    All of the above

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Find the correct match.

$A$: Antibiotics like penicillin can be used to treat common cold.
$R$: Penicillin causes lysis of viral cells.

"Prevention is better than cure". Comment.

Identify the odd one out in the context of diseases.

Identify the odd one out in the context of drugs.

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