Dardousis, K., Voolstra, C., Roengvoraphoj, M., Sekandarzad, A., Mesghenna, S., Winkler, J., Ko, Y., Hescheler, J. and Sachinidis, A. (2007) Identification of Differentially Expressed Genes Involved in the Formation of Multicellular Tumor Spheroids by HT-29 Colon Carcinoma Cells. The American Society of Gene Therapy, 1, 94-102.