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Biomedical subjects

M A DARKEN

Publications and source records attributed to M A DARKEN.

13 recordsLinked to original sources
PubMed1963

Effects of ultraviolet-absorbing compounds on spore germination and cultural variation in microorganisms.

A brightener and a nonfluorescent ultraviolet absorber were found to be associated with an increase in the per cent of spore germination and cultural variation in a streptomycete and a Penicillium. When the brightener was combined with ultraviolet light, more variants were obtained than with either ultraviolet or brightener alone. This effect occurred at concentrations of brightener substantially greater than those used for fluorescent labeling.

Penicillins↗
PubMed1962

Absorption and transport of fluorescent brighteners by microorganisms.

The absorption of brighteners by living cells and their transport to subsequent growth is described. Brighteners are highly fluorescent, ultraviolet-absorbing compounds which appear to be essentially nontoxic, stable biological markers. They have been effectively absorbed by growing cultures of bacteria, yeasts, actinomycetes, and higher fungi, with active growth centers evidencing the greatest flourescence.

Bacitracin↗
PubMed1961

Applications of fluorescent brighteners in biological techniques.

The visual labeling of various microorganisms has been accomplished with specific fluorescent ultraviolet-absorbing compounds that not only have been bound by the cell but have been transferred by it to subsequent growth. The possibility of application to genetic studies is suggested.

Coloring Agents↗