bacteria corynebacterium diphtheriae

corynebacterium diphtheriae bacterium microbe biology medical microscopic science micro medicine human microbiology infection epidemic organism background scientific macro health illness sick microscope sickness disease cells experiment research closeup rodshaped fever microorganisms bugs pathology diphtheria grampositive respiratory tonsils illustration vaccine dtp dtap pseudomembrane ulcer toxin ulcerans quinvaxem tetraxim tdap immunisation