"Freeze-Dried Specimens"

Cellular slime mold. Demonstrates amoeboid state, pseudoplasmodial state, and fruiting body, or sorocarp. Found in woodland soil in decomposing vegetation where bacteria are abundant. Incubation temperature 25°C. Plate cultures grown with Enterobacteria as food source; freeze-dried cultures include food source.

Characterized by an amoeboid stage (lacking cell walls) and a fungus-like reproductive structure.

Produces orange pigments. 

Capsules produced in milk. Psychrophilic (prefers low temperatures), produces yellow pigments. 

This pathogenic organism is sometimes isolated from hay and grass.

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

Formalin Preserved

Freshwater, Unicellular; pennate, with bilateral symmetry. Diatom or basic medium.

Characterized by shells (tests) made of silica, in two parts.

Marine. Filamentous; freely branched. Erdschreiber’s medium.

Characterized by green plastids and cell walls composed of cellulose.

Deuteromycete. “Black mold”. Produces citric acid. Common airborne contaminant. Causes aspergillosis. Incubation temperature 25°C. Sabouraud dextrose agar growth medium.

Zygomycete. Common black bread mold. Lab contaminant. Mating strain, cross with Rhizopus stolonifer (nigricans) (+) to produce zygospores. Incubation temperature 25°C. Potato dextrose agar growth medium.