Currently, there is no standardized method for the preparation of paracoccidioidomycosis (PCM) antigens, which has resulted in differences in the antigens used for serological diagnosis. Here, we report a procedure that uses subtractive phage display selection to select and identify new epitopes for the serodiagnosis of PCM caused by Paracoccidioides brasiliensis. A synthetic peptide obtained using this methodology was successfully recognized by sera from PCM patients, thus demonstrating its potential use for improving the serodiagnosis of this mycosis. The development of synthetic peptides for the serodiagnosis of PCM could be a promising alternative for the better standardization of diagnoses among laboratories.
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