Abstract
Summary
The causative agent of Chicken Tumor I resists freezing and desiccation, and this dried material retains its activity after king shaken for 6 days in dry acetone, alcohol, and toluene. The same is true of vaccine virus. The dried material of Chicken Tumor I is rendered inactive by shaking with chloroform while vaccine virus in the dried state withstands such treatment. Herpes febrilis in brain tissue resists freezing natl desiccation but is destroyed when the dried material containing it is shaken with alcohol, acetone, toluene, or chloroform. None of the agents studied are extracted in their active form from the dried material by the solvents.
From these results it would appear to be impossible to distinguish between the agent of Chicken Tumor I anti viruses by desiccation and subsequent treatment with the ordinary organic fat solvents.
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