It is useful to detect cancer
MRI
Widal test
ELISA
None
Discuss with your teacher what does 'a suitable gene' means, in the context of $DNA$ vaccines.
Except skin, other physical barriers which also helps to prevent the entry of the microorganisms are
$I.$ mucus coating of the epithelium lining the respiratory
$II.$ gastrointestinal tracts
$III.$ urogenital tracts
Choose the correct option
Pasteurella/Yersinia pestis (causal agent of Bubonic Plague) is transmitted by