Figure 4From: Vaccination with attenuated Salmonella enterica Dublin expressing E coli O157:H7 outer membrane protein Intimin induces transient reduction of fecal shedding of E coliO157:H7 in cattleSerum IgA antibody response. Peripheral blood was collected weekly from all calves during the length of the vaccination study. Intimin-specific serum IgA antibody concentrations were measured by ELISA. The bar graph depicts the mean (± standard deviation) of animals in each group. Normalization of data was performed by subtracting the OD410 of diluent-only wells from experimental values.Back to article page