https://pmc.ncbi.nlm.nih.gov/articles/PMC40312/
Competition between noggin and bone morphogenetic protein 4 activities may regulate dorsalization...
Bone morphogenetic protein 4 (BMP-4) induces ventral mesoderm but represses dorsal mesoderm formation in Xenopus embryos. We show that BMP-4 inhibits two...
bone morphogenetic protein