pattern specification process
   |__regionalization
       |__segmentation  265 rec.
           |__appendage segmentation 25 rec.
           |   |__imaginal disc-derived leg segmentation(+) 25 rec.
           |__blastoderm segmentation 220 rec.
           |   |__head segmentation(+) 21 rec.
           |   |__periodic partitioning(+) 50 rec.
           |   |__tripartite regional subdivision(+) 140 rec.
           |   |__trunk segmentation 16 rec.
           |__brain segmentation 5 rec.
           |__central nervous system segmentation 5 rec.
           |   |__brain segmentation 5 rec.
           |__renal system segmentation
           |__segment specification 38 rec.
           |   |__somite specification
           |   |__specification of nephron tubule identity(+)
           |   |__specification of segmental identity, head(+) 11 rec.
           |   |__specification of segmental identity, trunk(+) 8 rec.
           |__somitogenesis
           |   |__axis elongation involved in somitogenesis(+)
           |   |__fibroblast growth factor receptor signaling pathway involved in somitogenesis
           |   |__regulation of somitogenesis
           |   |__somite rostral/caudal axis specification
           |   |__somite specification
           |   |__Wnt signaling pathway involved in somitogenesis
           |__trunk segmentation 16 rec.
               |__specification of segmental identity, trunk(+) 8 rec.
               |__trunk neural crest cell migration(+)