MCQ
Bell-shaped polygonal pyramid indicates:
- AHigh percentage of young individuals
- BModerate percentage of young individuals
- CLow percentage of young individuals
- DLow percentage of old individuals
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$1.$ Viral $RNA$ replicates to form viral $DNA$ with the help of reverse transcriptase.
$2.$ The progeny viruses released in the blood attack other $T_H$ and destroy
$3.$ Viral $DNA$ gets incorporated into host cell's $DNA$ and produces virus particles
$4.$ Virus enters to macrophages