Fig. 2From: Lumbar vertebral osteomyelitis and psoas abscess caused by Actinomyces israelii after an operation under general anesthesia in a patient with end-stage renal disease: a case reportGram stain and culture of the aspirate from L2/L3 intervertebral disk. a Gram stain showed multiple neutrophils and a few thin filamentous Gram-positive rods, and b small whitish colonies on sheep blood agar. The isolate was identified as Actinomyces israeliiBack to article page