Abstract
Summary
1. Rats fed on a diet rich in protein (casein) for 17 to 21 days showed a markedly higher resistance to diphtherial toxin than rats fed diets high in carbohydrate or fat. This could be demonstrated not only when the dose of toxin was based on the weight of the animals, but also when the dose was based on age. 2. Acute inanition caused an increased resistance to diphtherial toxin when the dose was based on the weight of the animal.
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