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CdM of MSCGATA-4 promotes capillary-like tube formation in vitro. A: human umbilical vein endothelial cell (HUVEC) morphology visualized by inverted microscopy. B: HUVECs were green after labeling with PKH67. C: representative images of capillary-like structures in MSCGATA-4 (CdMGATA-4)- or MSCNull (CDMNull)-conditioned medium or control medium (CdMCon). D: quantitative assessment of capillary-like tube formation under various CdM and neutralizing antibody conditions.
