Question

what is the biological puzzle

Answer 1

Good morning dear...

Foremost, viruses are neither living nor non-living. They are simply in animate, complex organic matter and can’t even multiply on their own. Yet, they manage to infect and hijack the host cell machinery so as to make copies of the virus.Many viruses have this knack of evading the immune system by constantly changing their genetic material. So whatever Antigenic peptide was presented(if any) by and to the cells of immune system for generating aresponse against these viruses, cannot be used for carrying out an immune response with substantial intensity, because the genetic
sequences of the virus has changed.

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