Mark the correct statement
The anamnestic response against a pathogen is highly intensified
The $T-$lymphocytes produce antibodies
The $B-$lymphocytes produce cell mediated response
An antibody is represented by $H_{2}L_{4}$
Diphtheria is due to .............
$L.S.D.$ is
What precautions should be taken to avoid smoking ?
ELISA is used to detect viruses, where