Pictures of Erythema Migrans
a) Wormser, Gary P. Early Lyme Disease. N Engl J Med 2006 354: 2794-280. Copyright © 2006 Massachusetts Medical Society. All rights reserved.
b) From Fig 1 from Barbour & Fish, SCIENCE 260:1610-1616 (1993). Reprinted with permission from AAAS.