Fig 4C Liu et al, 2000. [PMID:10727859] .Copyright: Reprinted with permission from Elsevier from [doi:10.1016/S0925-4773(99)00340-8] Mech Dev 92: 207-15, Liu D; Bei D; Parmar H; Matus A, Activity-regulated, cytoskeleton-associated protein (Arc) is essential for visceral endoderm organization during early embryogenesis. Copyright 2000