Recent publications mentioning the FiberCell Hollow Fibre Bioreactor for producing exosomes with urine derived stem cells:

Urine-derived stem cells facilitate endogenous spermatogenesis restoration of busulfan-induced non-obstructive azoospermic mice by paracrine exosomes. Cuncan DengYun Xie et al.; Stem Cells and Development (Jul 16 2019) [abstract]… “Our data demonstrated that transplantation of USC‐exos was able to promote spermatogenesis in the testes of busulfan‐induced NOA mice. The possible mechanism might lay in the abundant miRNAs
carried in USC‐exos…”

Extracellular Vesicles From Human Urine-Derived Stem Cells Ameliorate Erectile Dysfunction in a Diabetic Rat Model by Delivering Proangiogenic MicroRNA: Ouyang B. et al.; Sexual Medicine (2019) [open access]...Author describes high density culture of stem cells in the FiberCell Systems hollow fibre bioreactor. “Our data indicate that USC-EVs enhance the expression of endothelial cell markers, reduce collagen deposition, and improve the neurogenic-mediated erectile response in DED rats. The improvement in DED in a rodent model after administration of USC-EVs is similar to that seen after cell therapy with USCs or other types of MSCs. The cargo of proangiogenic miRNA may play an important role in endothelial repair.”