Figure 2: (a) Focus of actinomycosis with surrounding inflammatory cells (arrowed, H and E stain, original magnification ×10), (b) Gram-positive actinomycotic colony (arrowed, gram stain, original magnification ×10), (c) Acid-fast negative bacteria (acid-fast stain, original magnification ×10), (d) Focus of actinomycosis with surrounding inflammatory cells (arrowed, H and E stain, original magnification ×100