Fig. 2From: Empyema necessitans with osteomyelitis of fifth rib due to Nocardia farcinica: a case reportDirect microscopic appearance of aspirated pus after ZN staining (Modified Kinyoun technique with 1% sulphuric acid) showing thin, slender, acid-fast, beaded, branched bacilli against a background of pus cells, suggestive of Nocardia SppBack to article page