The Plasmatic Human Virus ( PHV) in human body covered or surrounded with pure water which provides the following;

1. Antiseptic action which kills some infectious micro organisms
2. Active agent filter, purify some chemical elements which needed in field of reaction.
3. Absolved some unwanted chemical elements from field of reaction as waste material.
4. Act as Enzyme where break down compound and then provide to the  field of reaction.

In general aspect, the pure water around the PHV  or nuclear as interstitial fluids act like an active filter.