ASCL1 and small cell lung carcinoma: We collected EVs secreted by cell lines representing the three predominant SCLC subtypes: SCLC‐A with high ASCL1 (H69 and H209 cells), SCLC‐N with high NEUROD1 (H82 and H524 cells), and SCLC‐P with high POU2F3 (H526 and H1048 cells).