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For many years a small book, FOGS AND CLOUDS by the same author, has occupied a unique position because it combined a simple-though thoroughly scientific-explanation of the various phenomena with…

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the…

This scarce antiquarian book is included in our special Legacy Reprint Series. In the interest of creating a more extensive selection of rare historical book reprints, we have chosen to…

1.2 Definition of Defective Interfering (DI) Particles Defective interfering viral particles, as defined by Huang (1973), have the follow ing properties: (1) they are deletion mutants and therefore lack large…

First, a variety of genetic and protein structural evidence suggests that two discrete genes - both a variable region gene and a constant region gene - specify each heavy chain…

The Herpesviruses A consideration of the genetic analysis of members of the herpesvirus group necessitates a description, albeit brief, of the properties of the group and, most importantly, of their…

Two kinds of antigenic variation occur in influenza viruses, antigenic drift and major antigenic shifts; Antigenic drift, which involves gradual changes in the surface antigens of influenza virus, is thought…