Word: mycelium
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Dates: during 1940-1949
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...been concerned with one major problem: how to make the mold that produces penicillin yield more heavily. This delicate process has more hazards than an obstacle race. The penicillium mold, found in fertile soil, is cultivated in a sugary solution. It develops a network of very fine branches, *called "mycelium," which secrete penicillin. If the delicate mycelium breaks, production of penicillin stops. Temperature must be kept at 24°C. Worst of all hazards is contamination. The sugary bath in which the mold grows is an ideal medium for bacteria; if any get in, they destroy all penicillin present...
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