Anatomomopathological and immunohistochemical analyses of the spleen and lymph node of dogs seropositives for leishmaniasis in serological tests oleh Aline Oliveira de Magalhães, Lucilandia Maria Bezerra, Diego Pereira Araújo, Bruna Siqueira Gomes de Lima, Leandro do Padro Assunção, Eduardo de Paula Nascente, Ana Paula Iglesias Santin, Rodrigo Caldas Menezes, Veridiana Maria Brianezi Dignani de Moura