Cytologic preparations from multiple patients. (A and B) Loose aggregate of thin, filamentous Nocardia bacteria (grains) with branching and beading appreciable upon high-power examination, Modified Ziehl-Neelsen stain 1003 (A), 10003 (B).
From: McHugh KE, Sturgis CD, Procop GW, Rhoads DD. The cytopathology of Actinomyces, Nocardia, and their mimickers. Diagn Cytopathol 2017; 45:1105.
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