Word: serum
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Dates: during 1930-1939
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...disease's mortality rate runs up as high as 30%. Once a person is infected, the only specific treatment has been to inject him with "convalescent" serum taken from someone who has survived an attack of the disease. Not all survivors show signs of paralysis. And not all of the paralyzed are permanently so. If a paralyzed muscle twitches when the doctor applies an electric current to it, the nerve is not entirely destroyed. By careful training the muscle can learn to work again. If the nerve is dead, the muscle wastes away and never recovers. President Roosevelt will...
That discovery accelerated the search for a vaccine which could immunize children against infantile paralysis. Blood of persons who have survived the disease contains invisible substances called antibodies which neutralize the virus. Hence they are immune. When serum from such blood is injected into a child's veins, the child also becomes immune...
...health officers cannot well go around bleeding adults who have had the disease to obtain the base for a serum to immunize a whole community's children. In the long hunt for a more practical serum none has been more assiduous than Dr. William Hallock Park, longtime director of the research laboratories of New York City's Department of Health...
After a day or two of observation to insure that the cultures are alive and not contaminated, they are transferred to new medium containing serum and plasma derived from the intended recipient of the graft. On this medium they are grown for a period of two to four weeks, being transferred to fresh medium as often as seems desirable...
...mouse-brain virus as a vaccine. They found that while monkeys inoculated with it developed immunity to yellow fever, they were also likely to develop inflammation of the brain, in many respects as bad as yellow fever. It was then proved that a mixture of mouse brains and serum from human beings who had recovered from yellow fever was a safe vaccine. But enough such serum for wholesale vaccination is impossible to accumulate, and yellow fever remained unbeaten...