Insignificant anti-acne activity of Azadirachta indica leaves and bark. Journal of Pharmaceutical Negative Results, [S. l.], v. 3, n. 1, p. 29–33, 2012. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/49.. Acesso em: 7 jun. 2026.