Tác giả: L. Svru?ek

The expression of many bacterial genes adapts itself in an almost in- stantaneous and reversible way to specific environmental changes. More specifically, the concentration of a number of metabolites …

Influenza continues to be one of the major epidemic diseases of man and is, in fact, his only remaining pandemic disease (BEVERIDGE, 1969). This is largely because influenza virus undergoes extreme a …