- Immunization with a single T helper cell epitope abrogates Friend virus-induced early erythroid proliferation and prevents late leukemia development. Miyazawa, M., Fujisawa, R., Ishihara, C., Takei, Y.A., Shimizu, T., Uenishi, H., Yamagishi, H., Kuribayashi, K. J. Immunol. (1995)