Short communication: In vitro evaluation of a Bacillus sp. for the biological control of the coffee phytopathogen Mycena citricolor.

A cell-free supernatant and an ethanolic extract of a 3-day-old culture of Bacillus UCR-236 inhibited the growth of Mycena citricolor, as determined by the 'Oxford cylinder' method. A 3-day-old culture of the same bacterium also decreased leaf infection by the pathogen in a moisture-chamber test.

Inhibition of Bacteroides fragilis on blood agar plates and reversal of inhibition by added hemin.

Bacteroides fragilis strains formed much smaller colonies on most types of blood agar plates than they did on the same media without blood. Blood inhibited strains of B. fragilis subsp.

Anaerobic specimen transport device.

A device is described and evaluated for the anaerobic transport of clinical specimens. The device limits the amount of oxygen entering with the sample to a maximum of 2%, which is rapidly removed by reacting with hydrogen in the presence of a palladium catalyst. The viability on swabs of 12 species of anaerobes, four strains of facultative anaerobes and a strain of Pseudomonas aeruginosa, was maintained during the length of the tests (24 or 48 h).