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All authors read and approved the data and final version of the manuscript.”
“Background SCH727965 mouse Paracoccidioides brasiliensis is a thermo-dimorphic pathogenic fungus. It causes paracoccidiodomycosis (PCM) in man, which is an endemic mycosis in Latin America that affects mostly the lungs, but can disseminate to other organs . P. brasiliensis is multinucleated in both pathogenic yeast and infectious mycelial phases. Genetic transformation in the species has recently been optimized , however genetic manipulation PLEKHB2 is still in its infancy. It is now recognized that most P. brasiliensis
isolates diversified into an S1 main species, which is genetically close to the PS3 group of Colombian isolates, while PS2 is composed of a few isolates that constitute a phylogenetically cryptic species . Gp43 is the main diagnostic and prognostic antigen so far characterized in P. brasiliensis [4, 5]. It is a secretory glycoprotein whose peptide structure bears antigenic properties that are peculiar to the species . Therefore, it confers high levels of sensitivity and specificity for PCM patients’ sera when used as antigen in diagnostic tests such as immunodiffusion and capture ELISA, as well as by antigen detection in biological fluids . Antibody titers are directly proportional to the severity of active PCM; they are probably not protective in advanced stages of the disease, but experimental protocols in mice point to the immunotherapeutic potential of anti-gp43 monoclonal antibodies .