- A role for heterologous gap junctions between melanoma and endothelial cells in metastasis. Ito, A., Katoh, F., Kataoka, T.R., Okada, M., Tsubota, N., Asada, H., Yoshikawa, K., Maeda, S., Kitamura, Y., Yamasaki, H., Nojima, H. J. Clin. Invest. (2000)