Structural and Morphological Characterization of Bovine Pericardium–Nigella sativa Composite using XRD and SEM. Tropical Journal of Natural Product Research , [S. l.], v. 9, n. 12, p. 6235 – 6238, 2025. DOI: 10.26538/tjnpr/v9i12.42. Disponível em: https://www.tjnpr.org/index.php/home/article/view/7951. Acesso em: 1 jan. 2026.