"Gram Negative"

Isolated from human nasopharynx, saliva, and sputum. Spontaneously agglutinates in saline.

Ames test strain for detecting carcinogens. Causes infection in humans. 

isolated from human intestine. Lactose positive and sucrose positive after a few days’ growth. Causes a mild form of dysentery.

Both of these strains of Serratia marcescens are colorless mutants when plated alone, but when grown together, they produce a red pigment.

Isolated from human urinary tract and wound infections, this organism is identifiable by its characteristic putrefactive odor. 

Isolated from sewage, human intestines, and urinary tract infections. Spreading colonies are seen on agar growth medium. 

Normal flora of respiratory tract. Beta-lactamase positive. Also known by the name Branhamella catarrhalis

Used for culturing Dictyostelium discoideum (cellular slime mold). 

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.

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.

The presence of A. viscolactis in milk is a common cause for sliminess or "ropiness".

A. tumefaciens is a pathogenic soil bacterium known to cause grown gall disease, in nut trees and the plants of some stone fruits.

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.

This organism is an aerobic organism that is commonly found as part of normal human intestinal flora. It is pathogenic.

A collection of some of the strains of Escherichia coli needed to grow various coliphages (available separately).

This organism is commonly recovered from soil and water. As normal intestinal flora, it can also usually be found in sewage.