The relative content of the 12 cytokines in the upper medium of HUCs and ASCs differentiated to urothelium at different time points.

<p>A: TGF-alpha, PDGF-BB, and IGF-I; B: VEGF, SCF, and PIGF; C: IGFBP-4, NT-4, and FGF-6; D: AR, EGF, M-CSF.</p>