"Ward's Phenomena"

Carassius auratus.

Erpobdella obscura

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

Hemolysis, the rupture of red blood cells, is induced by certain species of streptococcal bacteria that produce extracellular hemolysin.  Observe this phenomenon with this set of 3 non-pathogenic species

The culture supplied includes copepods in various stages of development.

Carassius auratus

Poecilia reticulata.

Mixed genera. Also known as scuds, amphipods are freshwater crustaceans.

A collection of some of the more popular forms of coliphage. The successful culture of coliphage requires growing in the appropriate host bacterium (available separately)

Usually found in freshwater and mosses, this organism has a hard umbrella shaped shell or "test", out of which finger-like pseudopodia project.