‘Polio' is caused by

  • A

    A bacteriophage

  • B

    A virus with single strand $RNA$

  • C

    A virus with single strand $DNA$

  • D

    A virus with double strand $DNA$

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Assertion: $LSD$ and marijuana are clinically used as a analgesics.

Reason: Both these drugs suppress brain function.

  • [AIIMS 2006]

‘Vaccination' was invented by

Which is a water-borne disease

Full forms : $ELISA$ &$ PCR$
 

The inability to distinguish between self cells and non-self cells may lead to