FISH detection using FISH Kits (RiboBio, Guangzhou, China) was conducted as reported (Zhang et al., 2021a (link)). OA-FLS were incubated in hybridization buffer using a circRNA probe labelled by CY3 (RiboBio, Guangzhou, China) (Supplementary Table S1). Additionally, the localization of circRNA insided the cells was confirmed by a TCS SP8 X laser confocal microscope (LEICA).
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