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(A) Vaccination works on the principle of immunological memory. When a vaccine is introduced into the body,it mimics the pathogen,triggering the immun

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$A$ and $R$ are both true and $R$ is the correct explanation of $A$.

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(A) Vaccination works on the principle of immunological memory. When a vaccine is introduced into the body,it mimics the pathogen,triggering the immune system to produce $B$ and $T$ memory cells.These memory cells recognize the specific pathogen upon subsequent exposure and mount a rapid,massive immune response by producing large quantities of antibodies,thereby neutralizing the pathogen.Thus,Assertion $A$ is true because vaccination provides protection,and Reason $R$ is true because it correctly explains the mechanism of immunological memory involving $B$ and $T$ cells.

Column-$I$	Column-$II$
$(a)$ Physical barrier	$(w)$ Saliva
$(b)$ Physiological barrier	$(x)$ Interferons
$(c)$ Cellular barrier	$(y)$ Skin
$(d)$ Cytokine barrier	$(z)$ Monocytes

Assertion $A$: Vaccination protects an individual against infection by specific pathogens.
Reason $R$: $B$ and $T$ memory cells produce antibodies in large quantities to neutralize the pathogen attack.
Which option is correct for Assertion $A$ and Reason $R$?

Similar Questions

Match the following columns correctly:
Column-$I$ Column-$II$
$(a)$ Physical barrier $(w)$ Saliva
$(b)$ Physiological barrier $(x)$ Interferons
$(c)$ Cellular barrier $(y)$ Skin
$(d)$ Cytokine barrier $(z)$ Monocytes

Bone marrow is included in:

Select the option that contains only secondary lymphoid organs.

Draw a well-labelled diagram of an antibody molecule.

Given below are two statements. Select the most appropriate answer from the given options.
Statement-$I$: $T$-lymphocytes have $4$ subtypes as helper,killer,memory,and suppressor $T$-cells.
Statement-$II$: $B$-lymphocytes mature in the thymus and are responsible for cell-mediated immunity.

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Assertion $A$: Vaccination protects an individual against infection by specific pathogens.Reason $R$: $B$ and $T$ memory cells produce antibodies in large quantities to neutralize the pathogen attack.Which option is correct for Assertion $A$ and Reason $R$?