Figure 4G of Pabst et al., 1998 [PMID:9545546] . Copyright: Reprinted with permission from Elsevier from [doi:10.1016/S0925-4773(98)00035-5] Mech Dev 73: 85-93, Pabst O; Herbrand H; Arnold HH, Nkx2-9 is a novel homeobox transcription factor which demarcates ventral domains in the developing mouse CNS. Copyright 1998.