CAV1 and Pleural effusion: To validate these findings, we assessed CAV1 and EGFR protein expression in our HGSOC models by immunoblotting, which revealed a strong expression of both proteins in JHOS2, PDC2 and PDC3 but not in PDC1, PDC4, PDC5, Kuramochi and Ovsaho, which are all metastatic samples derived from ascites or pleural effusion (Fig. 5a).