**5.3.4 Planting to TSI AGAR and assessment**


and the bottom is yellow. "Acid reaction, glucose fermentation) H2S and gas is positive or negative. H2S reaction manifest itself with blackening of the medium. Typical reactions of *Salmonella* and Arizone species in Lysine-Iron Agar medium are purple colored sloped and red "alkaline reactions", vertical part. They produce H2S and sometimes gas (*Figure 10)*.

Serological tests are continued with positive *Salmonella* cultures.

Fig. 10. Appearance of *Salmonella* in TSI Agar
