develops from ends during starts during blastomere D2.2 blastomere D2.2.1 D2 xenopus_anatomy Blastomere which lies lateral to blastomere D2.1.1 in the fourth tier of blastomeres. It contributes cells to the cranial ganglia, neural crest, spinal cord, fin epidermis, branchial mesoderm, heart, somites, pharynx, foregut, liver, and hindgut. D2.2.1 eriksegerdell 2016-08-16T20:28:11Z XAO:0005102 dorsal vegetal hemisphere blastomere NF stage 6 (32-cell)