Fig. 7From: Oral administration of a recombinant modified RBD antigen of SARS-CoV-2 as a possible immunostimulant for the care of COVID-19Micrographs by TEM of the oil-in-water emulsion without recombinant proteins (A, B), oil-in-water emulsion with RBD-P (C, D) and oil-in-water emulsion with recombinant RBD (E, F) developed for oral administration. Scale bars are found inside the micrographsBack to article page