MOUSE-PROTECTIVE TITERS OF SERA OF VOLUNTEERS FOLLOWING INJECTION OF PNEUMOCOCCI OR THEIR TYPE-SPECIFIC POLYSACCHARIDES
- PMID: 19871533
- PMCID: PMC2135601
MOUSE-PROTECTIVE TITERS OF SERA OF VOLUNTEERS FOLLOWING INJECTION OF PNEUMOCOCCI OR THEIR TYPE-SPECIFIC POLYSACCHARIDES
Abstract
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.
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