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Food poisoning in man due to heat-sensitive strains of Cl. perfringens type A appeared to be mediated through enterotoxin synthesized in vivo during sporulation. A minimum of 2.0 X 10(5) vegetative cells suspended in sporulation medium was sufficient to elicit gut-loop response in rabbits. The functional disturbance in the gut as well as the structural changes were progressive and proportional to the size of the inoculum up to a dose limit of 2.0 X 10(7) vegetative cells and beyond this the changes remained steady.
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Chakrabarty et al. (1979) studied this question.
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