High doses of graphene quantum dots impacts on microcirculation system: An observational study - da Silva Barros, Aline Oliveira; Ricci-Junior, Eduardo; Pereira, Jonathas Xavier; Pikula, Konstantin; Golokhvast, Kirill S.; Manahães, Alex Christian; Souza, Pedro Filho Noronha; Alencar, Luciana Magalhães Rebelo; Bouskela, Eliete; Santos-Oliveira, Ralph (European journal of pharmaceutics and biopharmaceutics)