microscopic view of a group of borrelia burgdorferi, the bacterial agent of lyme disease transmitted by ticks. - 螺旋狀細菌 幅插畫檔、美工圖案、卡通及圖標
microscopic view of syphillis. syphilis is a sexually transmitted infection caused by the spirochete bacterium, treponema pallidum. - 螺旋狀細菌 幅插畫檔、美工圖案、卡通及圖標放大