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ORAL IMMUNIZATION AGAINST PNEUMOCOCCUS TYPES II AND III AND THE NORMAL VARIATION IN RESISTANCE TO THESE TYPES AMONG RATS
1. Considerable variation in the resistance of different rats toward Type II pneumococcus has been demonstrated. In general, older rats survive much greater doses than young ones, illustrating the acquisition of a natural partial immunity. The same is true for Type III but the immunity appears somew...
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Formato: | Texto |
Lenguaje: | English |
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The Rockefeller University Press
1931
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2180298/ https://www.ncbi.nlm.nih.gov/pubmed/19869966 |