(A, B) Mouse bone marrow-derived macrophages (BMDMs) and human peripheral blood monocytes were induced towards an M2-polarized phenotype by the stimulation of 20 ng/ml interleukin 4 (IL-4) plus 20 ng/ml IL-13. LncRNA CRNDE expression level in (A) BMDMs, BMDM-polarized M2 macrophages, (B) monocytes, and monocyte-polarized M2 macrophages was detected by qRT-PCR. Data information: Scale bar= 100 nm. The results shown are from three biological replicates. Data are expressed as mean ± SD. Student's t-test. **P<0.01 vs. BMDMs or monocytes or BMDMs-exo or monocytes-exo. 