title: Opacification of Middlebrook agar as an aid in distinguishing Nocardia farcinica within the Nocardia asteroides complex.
abstract: Among 58 aerobic actinomycetes isolated from different sources and geographical locations, none of 23 Nocardia asteroides isolates, at 18 N. farcinica isolates, 1 of 5 N. otitidiscaviarum isolates, and 1 of 4 Rhodococcus species isolates opacified Middlebrook 7H10 medium. Within the N. asteroides complex, this characteristic, together with growth at 45 degrees C and resistance to each of erythromycin, cefotaxime, and tobramycin, provides a simple means of distinguishing N. farcinica from N. asteroides.
authors: Department of Microbiology, Royal Melbourne Hospital, Australia.
authors: M
authors: M
authors: Carson
authors: A
authors: A
authors: Hellyar
mesh_terms: D000192:Actinomycetales / Q000145:classification / Q000254:growth & development; D000362:Agar; D000818:Animals; D001315:Australia; D001431:Bacteriological Techniques; D002439:Cefotaxime / Q000494:pharmacology; D003470:Culture Media; D004352:Drug Resistance, Microbial; D018432:Drug Resistance, Multiple; D004917:Erythromycin / Q000494:pharmacology; D005393:Fish Diseases / Q000382:microbiology; D005399:Fishes / Q000382:microbiology; D006801:Humans; D009391:Nephelometry and Turbidimetry; D009615:Nocardia / Q000145:classification* / Q000302:isolation & purification; D009617:Nocardia Infections / Q000382:microbiology / Q000662:veterinary; D009616:Nocardia asteroides / Q000145:classification / Q000254:growth & development; D013045:Species Specificity; D014031:Tobramycin / Q000494:pharmacology
chemical_list: D003470:Culture Media; D004917:Erythromycin; D000362:Agar; D002439:Cefotaxime; D014031:Tobramycin