Fig. 4From: Canine leishmaniosis caused by Leishmania major and Leishmania tropica: comparative findings and serologyScatter plot showing reactivity of five sera tested by ELISA from two dogs infected with Leishmania tropica. Seroreactivity was tested with antigens of L. infantum, L. major and L. tropica. Y-axis shows calibrated optical density (OD). The thick black line represents the mean value. The intermittent line represents the serological cut-off value. No significant differences were found between OD readings of the same sera with the different antigens (F (2,14) = 0.336, P = 0.721)Back to article page