Nocardia can be differentiated from other Actinomyces by
Actinomyces - on ZN staining- central pa as non-acid fast surrounded by acid-fast clubs( antigen-antibody complex ). Nocardia- on ZN staining - acid-fast. Nocardia species are aerobic. Reference: Textbook of Microbiology; Ananthanarayan and paniker's; 10th edition; Pg: 398
ZN staining
Fontana stain
Gram staining
Oxygen requirement
Bacteriology