"Ward's Phenomena"

Erpobdella obscura

Three Morphology Types in One Tube

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.

Marine, Macroalga, Multicellular; membranous thallus. Collected. Characterized by green plastids and cell walls composed of cellulose.

Specially Prepared “Real-Life” Combinations
The world is teeming with a wide variety of micro life, making studying samples of pond water complicated especially for the beginning student. To lessen the confusion, Ward's has prepared different culture mixes that reflect protist combinations that occur in the real world, yet eliminates the hundreds of other life-forms found in a collected sample.