Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
tpha vdrl rpr syphilis std sti anti-tp device rapid cassette treponema pallidum lab laboratory microorganism disease research hospital science patient analyze analyzing blood test tube serum plasma microbiology medical medicine experiment exam biology infection infectious sexually transmitted diseases chancre bacteria healthcare health care venereal diagnosis aids hiv