Fig. 7From: Inhalable hybrid nanovaccines with virus-biomimetic structure boost protective immune responses against SARS-CoV-2 variantsIn vivo safety. (A) H&E staining of major organs sections collected from immunized mice treated as described in Fig. 4 on day 42. Organ coefficient (B) and hematological measurement (C-H) of mice on day 18 after immunization. (H: Heart; Li: liver; S: Spleen; Lu: Lung; K: Kidney) (n = 3)Back to article page