Choose the correct pair:

  • A
    $T$-Lymphocytes $\to$ Do not secrete antibodies but help $B$-cells to produce them.
  • B
    Interferons $\to$ Proteins which protect non-infected cells from further viral infection.
  • C
    Secondary response $\to$ Highly intense than primary response.
  • D
    All are correct.

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Match the columns and choose the correct option.
Column-$I$ Column-$II$
$(a)$ Allergy $(1)$ Malaria
$(b)$ Widal test $(2)$ $AIDS$
$(c)$ $ELISA$ test $(3)$ Typhoid fever
$(d)$ Haemozoin $(4)$ $IgE$ antibodies

Match the correct pairs:
Column $1$Column $2$
$(i)$ Salmonella typhi$(p)$ Malaria
(ii) Plasmodium$(q)$ Typhoid
(iii) Entamoeba histolytica$(r)$ Ringworm
(iv) Epidermophyton$(s)$ Amoebiasis

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