Physical barrier = .............. and physiological barrier = .............

  • A
    Skin,saliva in the mouth
  • B
    Macrophage,acid in the stomach
  • C
    Respiratory tract,$PMNL$
  • D
    Urinogenital tract,$PMNL$

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$Pseudomonas$ $cola$ causes:

$A$: $ELISA$ is based on the principle of antigen-antibody interaction.
$B$: In $ELISA$,infection by a pathogen can be detected by the presence of antigens or by detecting the antibodies synthesized against the pathogen.

$A$ physical or functional change that causes discomfort or disability under normal conditions is known as:

$A$ broad-spectrum antibiotic is one that:

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