First Report of Seropositivity to Trypanosoma cruzi in Mexican Afro-Descendants from Guerrero and Oaxaca States

Figure 2

ELISA and WB of sera from participants. (a) ELISA results, the assay was performed as described in Materials and Methods. Seronegative (white circles) and seropositive (grey circles) samples are shown. The optical density/cutoff point ratio was used in the graph. The dotted line represents the cutoff value. (b) Western blot showing antigens recognized by seropositive sera. Seropositive serum was used as positive control (+); negative serum from a healthy individual was used as negative control (-). Some sera from seronegative participants are included. Representative positive and negative sera are shown.

(a)

(b)