231497.fig.001
Figure 1: Agarose electrophoresis (1.8%) with BrEt staining showing the PCR amplified products of B1 gene from Toxoplasma gondii. Lane 1: molecular weight marker (100 bp. Promega), lane 2: positive control of Toxoplasma gondii RH strain, lane 3: negative control (uninfected pig), lanes 4–12: positive pigs from Yucatan, Mexico.