MCQ
$HIV$ virus affects …… in $AIDS$ patient
- ACytotoxit $T-$ cell
- B$M-N$ cell
- CSuppressor cells
- ✓Helper $T-$ cells
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Column- $I$ |
Column- $II$ |
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$A.$ $500$ million years ago |
$1.$ Sea weeds and few plants |
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$B.$ $350$ million years ago |
$2.$ Jawless fishes |
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$C.$ $320$ million years ago. |
$3.$ Inverbebrates |