"Ward's Phenomena"

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

Everything you need to safetly collect and culture bacteria and fungi from your environment

Students determine contamination levels of ground beef in different environments.

Includes Examples of the Three Basic Morphological Types

Oscillatoria is a genus of filamentous green algae that moves by sliding filaments back and forth against each other.

This filamentous cyanobacteria is comprised of heterocysts and akinetes that are terminally located on the filament.

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

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 commonly isolated from sewage, water, soil and dairy products, as it is a normal part of intestinal flora.

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