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. 2016 May 3;2016(5):rjw068. doi: 10.1093/jscr/rjw068

Figure 4:

Figure 4:

Histopathology of appendix for Case 2. Sulfur granules showing clusters of Gram-positive filamentous non-spore forming actinomyces with adjacent neutrophilic infiltrate. The filaments are surrounded by eosinphilic proteinaceous material which represents a host reaction (haematoxylin–eosin stain, original magnification ×200).