Fig. 4

Identification of M2 macrophages and M2-Exo. A The morphology of M2 macrophages under an inverted microscope; B AGR1 and CD206 protein bands in M2 macrophages; C the morphology of M2-Exo under a transmission electron microscope; D CD81, Alix, TSG101 and GRP94 protein bands; E NTA of M2-Exo; F M2-Exo could be uptaken by Daoy cells; G miR-155-3p expression in M2 macrophages or M2-Exo. Data were reported as mean  ±  SD. Statistical analysis was by One-way ANOVA; ***P  < 0.001