"Freeze-Dried Specimens"

This pathogenic organism is sometimes isolated from hay and grass.

Found on dental plaque, implicated in cavities. No Lancefield group shown, gamma hemolysis. 

This organism is commonly isolated from soil or water, and produces a pink or rose colored pigment.

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 human nasopharyngeal mucosa

Isolated from milk and cheese products. Can be used to ferment milk. 

This organism is occasionally isolated from soil, but most frequently from smegma- a secretion from male and female genitalia.

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

A Common Intestinal Flora Isolate, Demonstrates Alpha Hemolysis on Blood Agar Growth Medium

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