Fig. 4

Exosome levels released from SK-HEP-1 derivatives. Quantification of exosomes. White and gray columns represent values from the control and sphere inducing medium, respectively. If necessary, the exosome inhibitor, GW4869 hydrochloride hydrate (final concentration, 5 μM), was added. *P < 0.05 with Tukey–Kramer multiple comparison test