Word: trickyness
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¶Even when manufacturers used every precaution known, the process of making a potentially deadly virus into a safe vaccine proved unexpectedly tricky. When three separate strains of virus, all officially dead by available tests, were pooled to make the final polyvalent vaccine, the mixture sometimes showed live virus. And...
Then there was the question of injecting the vaccine in 1 cc. (¼-teaspoonful) doses into the arm muscle-the method now in use. Dr. Salk had tried using only one-tenth of this amount in a tricky intradermal injection-between the layers of the skin. This, he found, was...
Fischer: Well, brainwashing is a rather tricky term. I think that the Chinese call it 'brain-changing' . . . We did have study periods . . .
3) it helps to relax patients, thus cuts down the need for tricky drugs such as curare.
But is the live vaccine safe? Dr. Salk, for one, does not think so. Although the live-virus method has been used successfully in the long-established smallpox and yellow fever vaccines, he believes that the polio virus is too tough and tricky to permit development in safe, nonvimlent form...