Widal Test Teaching Kit (Slide Test) demonstrates the detection of Salmonella typhi and Salmonella paratyphi which are responsible for causing enteric fever. This is a rapid serological test for screening. Contents: Widal Slide, Salmonella typhi antigen (H, O), Salmonella paratyphi antigen (AH, BH), Positive and Negative Controls, Mixing Sticks.