1887

Abstract

Summary

C3H/HeNMTV mice were immunised intraperitoneally (i.p.) with lipopolysaccharide (LPS) or detoxified LPS (D-LPS) derived from strain SR-11. In both cases, effective protection was achieved against a challenge dose of greater than 2x10 LD50 of the same organism given by i.p. injection. However, by comparison with LPS, approximately 6- to 10-fold more of D-LPS by weight was needed to protect mice to an equivalent degree. Histopathological studies showed that the initial lesions in infected mice protected with either LPS or D-LPS were composed of self-limiting abscesses which transformed into granulomas as the animals recovered. It is suggested that D-LPS may be modified to become a highly effective, non-toxic salmonella vaccine.

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1990-02-01
2022-01-21
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