Actinomyces growth in thioglycollate broth

bread crumb like pattern

anaerobic

Actinomyces

molar tooth colony

growth in 7-10 days

anaerobic

Actinomyces

molar tooth colony

growth in 7-10 days

anaerobic

Actinomyces

long or short branching filaments

diptheroid forms

non acid fast

Causes lumpy jaw (A. israelii)

Sulphur granules common

Actinomycotic granule

Eumycotic granule

Nocardia

growth in 3-7 days

buff, orange, red, or brown colonies

chalky, verrucose

aerobic

smells like wet dirt

Nocardia

growth in 3-7 days

buff, orange, red, or brown colonies

chalky, verrucose

aerobic

smells like wet dirt

Nocardia

partially acid fast 

chains of squared arthrospores

aerobic

Causes pulmonary disease (nocardiosis) and mycetoma of the foot

Nocardia

partially acid fast 

chains of squared arthrospores

aerobic

Causes pulmonary disease (nocardiosis) and mycetoma of the foot

Nocardia mycetoma granule

similar to eumycotic granules

Nocardia mycetoma granule

caused by Nocardia brasiliensis

Streptomyces

aerobic

non acid fast

dry and brittle colonies, white to orange

musty odor in basements

Casein hydrolysis by

Nocardia brasiliensis

Casein, Tyrosine and Xanthine Hydrolysis

Plate

Casein, Tyrosine hydrolysis positive

Nocardia brasiliensis

Actinomyces 

characteristics

anaerobic

non acid-fast

lumpy jaw

A. israelii most important pathogen

Nocardia asteroides

characteristics

Acid fast

Aerobic

Casein -

Tyrosine -

Xanthine -

Nocardia brasiliensis

characteristics

Acid fast

Aerobic

Casein +

Tyrosine +

Xanthine -

Nocardia otitidiscaviarum

characteristics

Acid fast

Aerobic

Casein -

Tyrosine -

Xanthine +

Streptomyces

characteristics

Non acid fast

Aerobic

Casein +

Tyrosine +

Xanthine +