NIKHRA, Vinod. Exploring COVID-19: Relating the spike protein to infectivity, pathogenicity and Immunogenicity. International Journal of Clinical Virology, [S. l.], v. 5, n. 1, p. 001–010, 2021. DOI: 10.29328/journal.ijcv.1001029. Disponível em: https://www.clinvirologyjournal.com/index.php/ijcv/article/view/ijcv-aid1029. Acesso em: 3 dec. 2025.