Word: bacterium
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Dates: during 1920-1929
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...Vaccine (in the special sense) contains dead or weakened bacteria which stimulate the blood to kill active germs. Scrum is the fluid of immune blood obtained after coagulation. It contains antitoxins which counteract the poison produced by a specific bacterium. The three terms are often loosely used as equivalents...
...butchers and furriers are apt to catch from infected rabbits (TIME, June 18 & Nov. 26). Academically, rabbit fever is termed tularemia, after Tulare County, Calif., where in 1910 it was first identified. Doctors, however, prefer to call it Francis Disease, in honor of Dr. Francis, who isolated the germ (Bacterium tularense) to his own harm, malaise and inconvenience...
...bacteria-say 'germs' if you prefer-finding suitable food, multiply and form groups, or colonies. Each colony represents the growth from one bacterium. These colonies were counted and by calculation the total number of germs clinging to the part of the powder puff used was obtained. This number multiplied by four of course gave the total count for the entire puff. It was 20,000. Twenty thousand bacteria clinging to a powder puff to be used on a clean face...
...next critical point, Evolution, is simply treated as it is now regarded by the civilized world, as a law of nature. The evolution of animal from vegetable life is also dealt with simply, by showing the absence of a clear dividing line at or near the lowly, ambiguous bacterium...
Zeiss microscope makers of Jena showed a cinema reel of unicellular life-isolated bacterium pneumococcus (pneumonia), bacterium streptococcus (pus), saccharomyces (yeast). It is possible to infect and kill an animal with a single germ. Such a germ proliferates to form a colony...