A clinical specimen was obtained from the wound of a patient diagnosed as Nocardiosis. For the selective isolation of Nocardia sp. Which one of the following would be the best method -: (A) Paraffin bait technique, (B) Castaneda's culture method, (C) Craige's tube method, (D) Hair bait technique
Answer is A. ‘Since Nocardia are among the few aerobic microorganisms that use paraffin as a carbon source, paraffin baiting can be used to isolate the organisms from mixed cultures’.