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| Column $I$ | Column $II$ |
|---|---|
| $(a)$ Actin | $(i)$ Transport of respiratory gases |
| $(b)$ Immunoglobulin | $(ii)$ Immunity |
| $(c)$ Melanin | $(iii)$ Pigmentation of the body |
| $(d)$ Hemoglobin | $(iv)$ Muscle movement |
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