Figure 1: Gruber-Widal reaction in tubes (source: Department of Pathology, University of Cambridge: http://old-www.path.cam.ac.uk/Immunology/I_07.jpg)
Figure 1: Gruber-Widal reaction in tubes (source: Department of Pathology, University of Cambridge: http://old-www.path.cam.ac.uk/Immunology/I_07.jpg)