Word: toxin
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Jonathan M. Freeman, assistant professor in epidemiology at the Harvard School of Public Health, said initials tests show the cause of the epidemic may be a bacterial toxin or a virus. But the cause may ultimately turn out to be unidentifiable, a University statement cautioned...
...tests have eliminated live bacteria as a possible cause for the illness, Freeman said. Tests are now being performed to determine if the agent was a bacterial toxin...
Berry said the illness was most likely either the result of a virus or an unknown toxin carried in the air. But the exact cause remains uncertain, and tests on students who became ill last week will continue for another month...
...weigh in on the debate who hasn't seen a friend or loved one hollowed out by cocaine or reduced to selling used appliances on the street. But if drugs take a ghastly toll, drug prohibition has proved itself, year after year, to be an even more debilitating social toxin...
Next, digestive juices dissolve the thick wall of the oocysts, triggering a growth cycle that ends in a reproductive orgy. Tiny protozoans attach themselves to intestinal walls and begin to mature. While there, scientists speculate, they probably exude some irritating toxin -- just the thing to cause the host organism to expel the oocysts produced by the adult organisms through diarrhea and vomiting. "A sick person will produce 100 million oocysts a day," marvels Cliver...