Micrococcus Gonorrhoea is a non-motile, non-liquefying coccus found in pairs with slightly concave surfaces opposed. From 0.8 to 1.5 u in diameter.

Is a purely parasitic organism; is pathogenic for man only.

Fig. 81. - Streptococcus Pyogenes, from the Pus taken from an Abscess. X 1000 (Fränkel and Pfeiffer).

Fig. 82. - Meningococcus in Spinal Fluid (from Hiss and Zinsser, "Text-Book of Bacteriology," D. Appleton & Co., Publishers).

Is found in the pus of gonorrhea, in the cells and also free in the serum.

Stains by ordinary methods but not by Gram's.

Culture

Is difficult. Does not grow on any of the ordinary media. Human blood-serum is the best. On it the organism in about twenty-four hours forms isolated, thin, gray colonies that later on become confluent. Can be grown on gelatin that contains acid urine and also in plain acid urine.

It gives rise to suppurative inflammations of the mucous and serous membranes. May cause malignant endocarditis, arthritis, and salpingitis.