"WardsSci000192"

Isolated from human intestine, this organism is known for its distinctive putrefactive odor.

Nitrogen fixation, produces nodules on legume roots. Bacteroids from nodules can be X, Y, and club shapes.

Colorless, most widely dispersed of the Serratia species. 

Isolated from human nasopharynx. Presumably not related to N. sicca; some relation to N. gonorrhoeae. Often agglutinates in saline. 

All microbial cultures undergo an extensive quality control program prior to releasing for sale, so they are guaranteed for purity as well as for species.

Escherichia coli - Lactose neg

From soil and water rich in minerals. Organism of putrefaction.

Frequent human isolate. Causes gastroenteritis.

From sewage and human intestine. Causes dysentery. 

Red-pigmented halophile from evaporating salt ponds; requires 25% salt medium, lyses easily in plain water, releasing DNA.