Production of proliferative follicle cells (FCs) and quiescent escort cells (ECs) by follicle stem cells (FSCs) in adult Drosophila ovaries is regulated by niche signals from anterior (cap cells. ECs) and posterior (polar FCs) sources. Here we show that ECs. FSCs. https://parisnaturalfoodes.shop/product-category/biopqq-20mg/