- DR5 knockout mice are compromised in radiation-induced apoptosis. Finnberg, N., Gruber, J.J., Fei, P., Rudolph, D., Bric, A., Kim, S.H., Burns, T.F., Ajuha, H., Page, R., Wu, G.S., Chen, Y., McKenna, W.G., Bernhard, E., Lowe, S., Mak, T., El-Deiry, W.S. Mol. Cell. Biol. (2005)