Further Studies on the Behavior of Bacteria toward Gentian Violet

Communal Activity of Bacteria

1. The behavior of a single bacterial cell toward gentian violet differs fundamentally from that of a small group of cells (thirty). 2. The explanation of this phenomenon is not purely quantitative; thirty cells accomplish much more than thirty times what one cell can accomplish.

The Effect of Gentian Violet on Protozoa

In the original communication of Churchman 1 on the selective bactericidal action of gentian violet, published two years ago, the suggestion was made that similar studies should be carried out on the effect of the dye on growing tissue. This communication contains the report s of work undertaken in that direction. The work was primarily undertaken to settle two questions raised by the observati...

The Selective Action of Gentian Violet on Closely Related Bacterial Strains

In a previous communication 1 a selective bactericidal p roper ty possessed by gentian violet was described, and observations were reported to indicate the nature of this chemical affinity as exhibited in a study of a large number of representative bacteria. It was shown that bacteria could be sharply divided into two groups by their behavior toward gentian violet, either by staining the organi...

The Reverse Selective Bacteriostatic Action of Acid Fuchsin

1. Acid fuchsin possesses a bactericidal power, selective as between Gram-negative and Gram-positive spore-bearing aerobic organisms. The selective feature is the reverse of that of gentian violet. 2. This reverse selective activity is also possessed by simpler sulfonated substances and would appear to be dependent in some way on the presence of SO(3) radicals. 3. Selective penetration, if at a...

[Bactericidal effects of gentian violet (Gv) and acrinol (Ac) against methicillin-resistant Staphylococcus aureus (MRSA) and gram-negative bacteria isolated from clinical materials].