COMPARATIVE EVALUATION OF SERUM NEOPTERIN AND BIOPYRRIN IN AXIAL SPONDYLOARTHRITIS: A CROSS-SECTIONAL STUDY . Genetics and Molecular Research, [S. l.], 2026. DOI: 10.4238/tg092y69. Disponível em: https://geneticsmr.com/index.php/gmr/article/view/970.. Acesso em: 9 jun. 2026.