Diphtheria is caused by

  • A

    Poisons released by living bacterial cells into the host tissues

  • B

    Poisons released from dead bacterial cells into the host tissues

  • C

    Poisons released by virus into host tissues

  • D

    Excessive immune response by the host's body

Similar Questions

A person is suffering from frequent episodes of nasal discharge, nasal congestion, reddening of eyes and watery eyes. These are the symptoms of

Antibodies fight against

Which of the following is not correctly matched

  • [AIPMT 2004]

When children play bare footed in pools of dirty water and flood water, they may suffer from diseases like

  • [AIIMS 2006]

Development of gametocyte from merozoite of Plasmodium occurs in