Researchers study thousands of ticks collected by the people they bit

An adult female western blacklegged tick, <em>Ixodes pacificus</em>, which has been shown to transmit <em>Borrelia burgdorferi</em>, the agent of Lyme disease.
An adult female western blacklegged tick, Ixodes pacificus, which has been shown to transmit Borrelia burgdorferi, the agent of Lyme disease.