Changes

==''Nocardia'' species==

==''Nocardia'' species==

===Morphology and staining===

===Morphology and staining===

Gram-stained ''Nocardia'' species are '''indistinguishable''' from ''Actinomyces'' species. They alternate between the coccobacillary resting face and the actively-growing filamentous forms.

Gram-stained ''Nocardia'' species are '''indistinguishable''' from ''Actinomyces'' species. They are '''partially acid-fast''' so a Ziehl-Neelsen stain would differentiate them from ''Actinomyces''. They alternate between the coccobacillary resting face and the actively-growing filamentous forms.

===Structure and composition===

===Structure and composition===