Highly variable penetrance of abnormal phenotypes in embryonic lethal knockout mice. מאת Wilson, R, Geyer, S, Reissig, L, Rose, J, Szumska, D, Hardman, E, Prin, F, McGuire, C, Ramirez-Solis, R, White, J, Galli, A, Tudor, C, Tuck, E, Mazzeo, C, Smith, J, Robertson, E, Adams, D, Mohun, T, Weninger, W