A Lecture on Vaccination against Cholera
نویسنده
چکیده
ation of spores the means by which the microbe of this disease, when outside the animal body, protected itself against the external world. Shortly after this it has been found that the spores not only preserve the life but also all specific properties of the microbe, and that it is owing to this circamstance that the bacillus of anthrax is one of the most constant species of schizomycetes known. On the other hand, a great mutability of properties has been discovered in all microbial virus not possessing spores, or in which sporification is arrested for a certain period. On the bacillus of chicken
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