Image

HELKIMCHEE/CC BY 2.0
Image

Patients who contract measles, a highly contagious disease, develop a skin rash.
|
WIKIMEDIA COMMONS
Image

TONY WYATT/CC BY-NC-SA 2.0
Image

U.S. FISH AND WILDLIFE SERVICE/CC BY 2.0
Image

LYNNE TERRY/THE LUND REPORT
Image

OREGON DEPARTMENT OF TRANSPORTATION
Image
