part of part of bounding layer of bounding layer of develops from develops from notochord connective tissue sclerotome perichordal tissue perichordal connective tissue TAO:0001642 ZFA:0001633 Portion of connective tissue which surrounds the notochord.[TAO] Derived from cells surrounding the notochord (possibly the slerotome). Disparate from (not derived from) notochord. Fibrous connective tissue that surrounds the notochord; includes a layer of elastin. AAO:0010446 relationship type change: part_of notochord (VSAO:0000032) CHANGED TO: surrounds notochord (UBERON:0002328)[VSAO] VSAO:0000054 perichordal sheath tissue UBERON:0007862 XAO:0004050 perichordal tube notochord AAO:0000737 perichordal sheath