This was especially vexing to physician and bacteriologist Robert Koch, who, in seeking to culture his bacteria, “bent all his power to attain the desired result by a simple and consistently successful method,” wrote bacteriologist and historian William Bulloch in his 1938 book, The History of Bacteriology. “He attempted to obtain a good medium which was at once sterile, transparent, and solid” and got some results with gelatine.6 But gelatine is easily digested by many microbes and melts at precisely the temperatures at which the disease-causing microbes Koch wanted to study grow best.
新年伊始,科技圈热闹非凡,一波未平,数波并起。
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Трамп поговорил с Зеленским по телефону. Президент США назвал желаемый срок завершения конфликта на Украине26 февраля 2026
Дания захотела отказать в убежище украинцам призывного возраста09:44