NRP2 and lung adenocarcinoma: A study on microRNA-328 (miR-328) secreted by lung adenocarcinoma A549 cells discovered that miR-328, potentially through the downregulation of neuropilin-2 (Nrp-2) expression in A549-derived extracellular vesicles (A549-Exos) in vitro, enhanced OC formation and bone resorption.