Article
Neutral-red reaction is related to virulence and cell wall methyl-branched lipids in Mycobacterium tuberculosis.
Microbes and infection - 1 Jan 2006
Cardona P-J, Soto C Y, Martín C, Giquel B, Agustí G, Andreu Núria, Guirado E, Sirakova T, Kolattukudy P, Julián E, Luquin M
Abstract excerpt
Searching for virulence marking tests for Mycobacterium tuberculosis, Dubos and Middlebrook reported in 1948 that in an alkaline aqueous solution of neutral-red, the cells of the virulent H37Rv M. tuberculosis strain fixed the dye and became red in color, whereas the cells of the avirulent H37Ra M. tuberculosis strain remained unstained. In the 1950 and 1960s, fresh isolates of M. tuberculosis were tested for...
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