THE quantitative analysis of barbiturates in body fluids is now generally carried out by ultra-violet Spectrophotometry 1. The difference in absorption at 240 mµ in 0.5 N ammonium hydroxide and in ...
INFECTION of animal cells with one type of poliovirus interferes with the growth of another, superinfecting, type added 30–60 min later 1,2. On the other hand, simultaneous infection with type 1 and ...
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