The Journal of Experimental Medicine, Vol 55, 495-504,
Copyright, 1932, by The Rockefeller Institute for Medical Research New York
STUDIES ON THE NATURE OF THE AGENT TRANSMITTING LEUCOSIS OF FOWLS
:
III. RESISTANCE TO DESICCATION, TO GLYCERIN, TO FREEZING AND THAWING; SURVIVAL AT ICE BOX AND INCUBATOR TEMPERATURES
J. Furth M.D.1 and
With the Assistance of Clara B. Taylor and Charles Breedis
1 From The Henry Phipps Institute, University of Pennsylvania, Philadelphia
The filterable agent transmitting leucosis resists drying, retaining its activity for at least 54 days. The conditions of successful desiccation have not been precisely ascertained. By the addition of glycerin the agent can be preserved for at least 104 days. It is not inactivated by freezing in liquid air. At 37.5°C. it loses its activity within 14 days, but retains some of its activity for at least 14 days when kept at 4°C.
Submitted on November 26, 1931