FGFRL1 and lung carcinoma: As shown in Figure 6E, FGFRL1 levels were both decreased in lung cancer cells incubated with miR‐210‐3p mimic or miR‐210‐3p inhibitor‐transfected lung CSC‐derived exosomes, compared with control levels; the decreased levels were more apparent in lung cancer cells after incubation with exosomes from lung CSCs transfected with miR‐210‐3p mimic.