Assays of comparative toxicity of sterile broth filtrates of Vibrio cholerae in 2 common test systems, the isolated short-circuited frog skin and the diarrhea-susceptible infant rabbit, indicated that ...
A cotton swab is dipped into concentrated hydrochloric acid (producing hydrogen chloride gas) while a second on is dipped into concentrated aqueous ammonia (producing ammonia gas). Both cotton swabs ...
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