The rat anti-occludin monoclonal antibody (mAb), rabbit anti-occludin polyclonal antibody (pAb) [17 (link)], rat anti-angulin-1/LSR mAb, rabbit anti-angulin-2/ILDR1 pAb [9 (link)], and rat anti-tricellulin mAb (24–69) [7 (link)] were characterized as described previously. The rabbit anti-cleaved-Caspase-3 (Asp175) pAb (# 9661) was purchased from Cell Signaling Technology (Danvers, MA, USA). Alexa Fluor 546-phalloidin (#A22283), Alexa Fluor 488 goat anti-rabbit IgG pAb (#A11008) and Alexa Fluor 546 goat anti-rat IgG pAb (#A11081) were purchased from Life Technologies (Waltham, MA, USA).
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