| Column-$I$ | Column-$II$ |
| $1$. Bone marrow | $a$. Large at birth,very small at puberty |
| $2$. Thymus | $b$. Site of production of all blood cells including lymphocytes |
| $3$. Spleen | $c$. Traps microorganisms present in the tissue fluid |
| $4$. Lymph nodes | $d$. Large bean-shaped organ |
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| List $I$ | List $II$ |
| $A$. Ringworm | $I$. Haemophilus influenzae |
| $B$. Filariasis | $II$. Trichophyton |
| $C$. Malaria | $III$. Wuchereria bancrofti |
| $D$. Pneumonia | $IV$. Plasmodium vivax |
| Column-$I$ | Column-$II$ |
|---|---|
| $(1)$ $HIV$ | $(v)$ Oncogenic virus |
| $(2)$ Cancer | $(w)$ Microsporum,Trichophyton |
| $(3)$ Allergens | $(x)$ Retrovirus |
| $(4)$ Ringworm | $(y)$ Colostrum |
| $(z)$ Serotonin |
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