Sign Up for a Free Account

This is an image preview.
Start a Free Account
to view the full image.

Sign Up for a Free Account For information on discounts, see Plans & Pricing

  • Nearly 3,000 illustrations, including video clips of neurologic disorders.

  • Every article is reviewed by our esteemed Editorial Board for accuracy and currency.

  • Full spectrum of neurology in 1,200 comprehensive articles.

Rocky Mountain wood tick, male

A male Rocky Mountain wood tick, Dermacentor andersoni, questing on a blade of grass (dorsal view). Photograph by James Gathany (2008). (Courtesy of the Public Health Image Library, Centers for Disease Control and Prevention. Public domain.)

Related Media

Associated Disorders

  • Acute ascending paralysis