Human Health And Diseases Ques 124

124. Vaccines are biological preparations that stimulate the immune system to recognize and fight pathogens.

[1999]

(a) treated bacteria or viruses or one of their proteins

(b) $MHC$ (major histocompatibility complex) proteins

(c) curative medications

(d) monoclonal antibodies

Show Answer

Answer : a

Hints & Solutions

(a) Vaccine contains dead, attenuated form or antigen of a pathogen which can be injected to provide immunity towards that pathogen. Monoclonal antibodies are homogeneous immunological reagents of defined specificity, so that these can be utilized for diagnosis and screening with certainty.