develops from ends during starts during blastomere V1.2 blastomere V1.2.2 B3 XAO:0005107 V1.2.2 2016-08-16T20:28:11Z xenopus_anatomy Blastomere which lies lateral to blastomere V1.1.2, posterior to its sister cell, blastomere V1.2.1, in the second tier of blastomeres. It contributes to the epidermis, fins, cranial ganglia, otic vesicle, central nervous system, neural crest, and somites, with occasional cells in the pharyngeal mesoderm, head mesenchyme, hindgut, and proctodeum. eriksegerdell ventral animal hemisphere blastomere NF stage 6 (32-cell)