Bacteriology of the Healthy Experimental Animal

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Abstract
By strictly aseptic technic the authors demonstrated that the organs of normal healthy dogs are regularly contaminated with anaerobic bacteria, predominantly Clostridium welchii. The same is true for rabbits, though in a lesser degree. Organs of healthy guinea pigs, hamsters and rats have always been sterile. Secretions of the contaminated organs in dogs were always found sterile; so were the organs of dog embryos. Biopsies of human livers were always found sterile.