Oral and nasal vaccination: current prospects, challenges, and impact of nanotechnology-based delivery systems. Brazilian Journal of Pharmaceutical Sciences, [S. l.], v. 59, p. e21769, 2023. DOI: 10.1590/s2175-97902023e21769. Disponível em: https://www.journals.usp.br/bjps/article/view/211878.. Acesso em: 9 may. 2024.