From and interview with Dr. Horowitz:
"We need to teach doctors how to make a clinical diagnosis of Lyme disease after ruling out other diseases, supporting that diagnosis by finding borrelia-specific bands on the Western Blot, which show evidence of exposure. This would include finding the 23(OspC), 31(OspA), 34(OspB), 39, and 83-93 kDa bands on the Western Blot. "
www.publichealthalert.org/-interview-with-dr-horowitz.html