title: Evolution of syphilitic chancres with virulent Treponema pallidum in the rabbit.
mesh_terms: D000818:Animals; D007271:Injections, Intradermal; D008297:Male; D011817:Rabbits; D012867:Skin / Q000473:pathology; D013591:Syphilis, Cutaneous / Q000209:etiology* / Q000473:pathology; D014210:Treponema pallidum / Q000472:pathogenicity*; D014774:Virulence