TLC analysis of lipid extracts from B. burgdorferi. Lipid extracts, visualized by iodine vapor, from strain B31 (A), strain N40 (B), strain BL303 (C), sprayed with anthrone reagent (strain B31) (D), immunostained with mouse anti BbGL-I (strain B31) (E), or lipid extract of Detoxy-Gel eluted material, exposed to iodine vapor (strain B31) (F).