Bacillus Pyocyaneus is an actively motile, flagellated, facultative anaerobic, liquefying bacillus. Is rather short and slender, 0.3 u X 1 to 21 u.

Fig. 80. - Staphylococcus Pyogenes Aureus, from an Agar-agar Culture. X 1000 (Günther).

Stains

Ordinary methods, but decolorized by Gram's.

Is found in pus.

Culture

On gelatin plates forms small, irregular, slightly greenish colonies. Produces a fluorescence of the neighboring gelatin. On agar-agar there is first produced a soluble bright green pigment along the line of inoculations. As the culture becomes older a second pigment forms, causing the medium to become a deep blue-green or dark blue.