The Journal of Experimental Medicine, Vol 83, 321-328,
Copyright, 1946, by The Rockefeller Institute for Medical Research New York
MOUSE-PROTECTIVE TITERS OF SERA OF VOLUNTEERS FOLLOWING INJECTION OF PNEUMOCOCCI OR THEIR TYPE-SPECIFIC POLYSACCHARIDES
Annabel W. Walter 1,
Edna L. Schenkein 1, and
Wheelan D. Sutliff M.D.1
1 From the Bureau of Laboratories of the Department of Health of the City of New York, New York
1. Sera of human subjects immunized with pneumococci or their type-specific polysaccharides showed type-specific antibody by mouse protection tests as well as on determinations of the specifically precipitable nitrogen.
2. The ratio, mouse-protective units to antibody nitrogen, was less in human sera of low potency than in more potent human or animal sera.
Submitted on December 12, 1945