Increased anti-nucleocapsid secretory IgA and consumption of complement component 3 in post-COVID syndrome patients - Hai, Zhiwen; Yang, Weihua; Ghazi, Azam; Buitrago, Amalia; Marin-Garcia, Patricia; Azcarate, Isabel G; Gonzalez-Escalada, Alba; Rossi, Nineth; Benitez-Cruz, Javier; Estevez-Benito, Ivan; Tortajada, Agustin; Regueiro, Jose R; et al. (Frontiers in Immunology, 2026)