Word: germs
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Dates: during 1930-1939
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...character, transmitted by a single gene. Resistance to the disease is a dominant character, and represses, but does not obliterate, the susceptibility factor whenever they occur together. A resistant individual mated to a susceptible one will have resistant offspring. But these offspring carry the susceptibility gene concealed in their germ plasm, and if they mate with susceptibles the second generation will be liable to cancer. The Slye mice show that not only inherited susceptibility but also some injury or chronic irritation is necessary for the malignant growths to appear. Dr. Slye has mice prone to cancer of the jaw which...
Just as rats make excellent laboratory animals for nutrition research, mice for cancer and monkeys for poliomyelitis, so ferrets are invaluable to influenza investigators. Ferret reactions were the basis of Harvard's Dr. William Firth Wells's demonstration last month that ultraviolet radiation kills the unknown germ or virus which causes that disease (TIME, Aug. 3). But many doctors think it probable that some infectious agencies change their form in different environments. The question remained: While human influenza could be communicated to ferrets, could ferret influenza be communicated...
Biologist Wells's Harvard experimental laboratory is a steel, glass-lined tank big as a dentist's operating room. Within is a mercury quartz lamp which emits ultraviolet light. The air within the tank Mr. Wells can make as pure or as germ-laden as he pleases...
...lethal effect of ultraviolet light on whatever causes influenza proved exceedingly difficult to demonstrate. Bacteriologists do not know whether an ultramicroscopic germ causes that disease or whether an ultramicroscopic virus (which may be a living organism or an active chemical entity) is involved. Best means of cultivating that invisible something is in the body of a live ferret. Working with his wife, Dr. Mildred Washington Weeks Wells, and his laboratory associate, Dr. Harold W. Brown, Mr. Wells exposed ferrets to air which had been contaminated by influenza. If the germ-laden air had been exposed to ultraviolet light...
During the spring and summer whoop-ing-cough season of 1935 Miller-main-tained chimpanzees "Herbert H," "Becky," "Darby," "Joan" & friends were infected with sputum from the throats of whooping Baltimore children. Evidence indicated that the whooping-cough germ requires a virus to lead the way into the air passages before the disease breaks out. That virus seemed to be the same virus implicated in the common cold...