Figure 1I. Copyright: Reprinted with permission from Elsevier from [doi:10.1016/S0925-4773(01)00383-5] Mech Dev 105: 153-6, Matsuda T; Nomi M; Ikeya M; Kani S; Oishi I; Terashima T; Takada S; Minami Y, Expression of the receptor tyrosine kinase genes, Ror1 and Ror2, during mouse development. Copyright 2001.