THE SURVIVAL OF THE TUBERCLE BACILLUS IN SUSPENSION IN PHYSIOLOGICAL SALT SOLUTION.
Three suspensions of tubercle bacilli in physiological salt solution were still virulent for guinea pigs after 310, 325, and 330 days at refrigerator temperature. One of these cultures on which recent tests had been made had lost very little, if any, of its virulence for guinea pigs in 325 days.
Shope
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Department of Animal Pathology of The Rockefeller Institute for Medical Research, Princeton, N. J.