Syphilis infection, illustration Illustration of a syphilis infection. Syphilis is caused by the spiralshaped bacterium Treponema pallidum green., by THOM LEACH SCIENCE PHOTO LIBRARY Stock Photo - Afloimages
Illustration of a syphilis infection. Syphilis is caused by the spiral-shaped bacterium Treponema pallidum (green)., by THOM LEACH / SCIENCE PHOTO LIBRARY