Mice were treated with systemic administration of either 16% aCD3-LNPs
or non-targeted LNPs, each carrying mCherry, and compared to no-treatment
control (NTC). A, B) Spleen weight (A) and size (B) one day after treatment. C,
D) Spleen weight (C) and size (D) one-week after treatment. E, F) Histological
sections of the spleens harvested one day (E) and one week (F) following each
treatment and stained with H&E, aCD8, aCD4, and aOX40. Black and white
dashed circles represent the white pulp and the periarterial lymphatic sheaths
(PALS) in the spleen sections, respectively. Scale bars are 2.5 mm for the whole
section and 200 μm for the magnified section. In A and C, all data are
presented as mean ± SD. Statistical analyses were performed using an
ordinary one-way ANOVA with Tukey’s multiple comparisons test in A and
unpaired T-tests with Welch’s correction in C. ns: not significant.
**p<0.01