NAYIONAL SCIENCE FOUNDATION ADVISORY COMMITTEE BIOLOGICAL AND WEDICAL SCIENCES PROPOSAL RATING SHEET No. Title Investigator Institution B-2067 Viral and rickettsial William A. Cassel Hahnemann Med Col replication in cells The reduction of animal-virology to a quantitative basis will only be possible on the haiss of staiies of the interactions ef virus perticles with single cells. ene 1 Score Signature From 5 (low) to 1 (high)