EXPOSURE of mould colonies to X-rays has long been known to give rise to 'sectorial' mutants. Mutant 'sectors', of course, also arise 'spontaneously' in Fungi as well as in Bacteria. The frequency ...
A SUSPENSION of Penicillium notatum (Fleming) hyphæ in a fluid medium, obtained from below the mycelium of the mould at the stage of its highest rate of penicillin production and freed from pyrogens ...
The blue-green mold, Penicillium notatum, which excretes penicillin, has a laboratory rival. Last week a biochemical team led by Dr. Vincent du Vigneaud of the New York Hospital-Cornell Medical Center ...
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