Fig. 4From: Engineered exosomes loaded with miR-449a selectively inhibit the growth of homologous non-small cell lung cancer Effects of miR-449a Exo on tumor cell invasion and migration. A The influence of miR-449a Exo on the migration ability of A549 cells was assessed via scratch test. ***P < 0.001. B Transwell assay was conducted to evaluate the migration and invasion capacity of A549 affected by miR-449a Exo. ***P < 0.001Back to article page