existence starts during or after Stage 6 clonogenic neoblast PMID:23079596 PMID:21566185 pluripotent stem cell PMID:27523733 PMID:29674432 PMID:19247960 PMID:29906446 Pluripotent piwi-1+ stem cells that self-renew, form expanding colonies and produce differentiating daughters that contribute to multiple organ systems. cNeoblasts are predicted to be broadly distributed across the anteroposterior axis of the adult worm. PMID:29674431 PMID:24040508 PMID:22543868 cNeoblast PMID:21852957 PMID:25254346 PMID:23652002 PMID:27150006 PMID:23318641 PMID:16344473 PMID:22899852 PMID:22385657 PMID:30962434 PMID:27551436 PMID:26711341 PMID:29357350 Planarian_Anatomy PMID:22318224 PMID:27502555 PMID:20215344 clonogenic stem cell PMID:22411224 PMID:22884275 PMID:24173799 PMID:27149082 PMID:23954785 PMID:22549959 PMID:27063937 PMID:25017721 adult pluripotent stem cell PMID:21937596 https://orcid.org/0000-0003-2569-1939 | https://orcid.org/0000-0002-7535-4407 PMID:25356635 PMID:28434803 PMID:27074666 PMID:24120894 PMID:23297191 neoblast somatic cell