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Transubstantiation h infectivity justify Judy just

The infective dose will depend upon the strain of Salmonella and the susceptibility of the person infected. It could be as low as 15-20 cells. See Related Links.

Retrovirus and all other viruses contain protein which are known as capsid.Retrovirus do have capsid, nucleocapsid and enzymes such as RT, integrase and accessory proteins. These proteins are crucial for their infectivity and replication inside the host.

A microbicide is any compound or substance whose purpose is to reduce the infectivity of microbes, such as viruses or bacteria. (Wikipedia) For the source and more detailed information concerning your request, click on the related links section (Answers.com) indicated below this answer box.