Figure 1G. Copyright: Reprinted with permission from Elsevier from [doi:10.1016/S0925-4773(00)00503-7] Mech Dev 100: 99-103, Pinco KA; Liu S; Yang JT, "alpha4 integrin is expressed in a subset of cranial neural crest cells and in epicardial progenitor cells during early mouse development." Copyright 2001. [PMID:11118892]