Antivenom against snake poison contains
Antigens
Antigen-antibody complexes
Antibodies
Enzymes
$A$ : It is considered advantageous to give the polio vaccine orally.
$R$ : It prevents reinfection by causing intestinal immunity
Smoking addiction is harmful because it produces polycyclic aromatic hydrocarbons, which cause
Severe Acute Respiratory Syndrome $(SARS)$
Which one spreads filaria
Entamoeba gingivalis is found in buccal cavity of man. It causes