Rabbit purified IgG fraction of antiserum to Borrelia burgdorferi (western blot bands at 83kD, 41kD, 34kD, 31kD and additional low MW bands). The immunogen is whole cell preparation from B. burgdorferi. Cross-reacts with Treponema pallidum, B. hermsii and B. parkerii. Purity is >95% IgG and is supplied at a concentration of 4-5mg/mL in 0.01M PBS, pH 7.2 with 0.1% sodium azide. Recommend short term storage at 2-8°C or frozen for long term.