Fig. 2.

. In vivo delivery of rhACE2-Cytomimetic particles, (A) Mouse experimentation workflow and immunohistochemical images of dissected nasal passages depicting endogenous mouse ACE2 and Spike RBD co-localization (solid white arrowheads), or Spike RBD protein not co-localized to the ACE2 fluorescent signal (black arrowheads). (B) Western blot image and quantification of the spike RBD/ACE2 protein ratio isolated from mouse nasal (N) and trachea (T) tissues following 3 h of exposure to Spike RBD in the control and rhACE2-Cytomimetic particles cohort (** p < 0.01).