contained in material entity anterior region of the whole animal ventral region of the whole animal ovary PMID:20967238 PMID:17376870 PMID:22074376 PMID:25278423 PMID:17390146 https://doi.org/10.1101/279364 PMID:25404302 PMID:27163480 PMID:28072387 PMID:16344473 PMID:18456843 PMID:27149082 PMID:20844018 female gonad A gonad containing female germline stem cells which fuel oocyte production. Two ovaries are located ventally, underneath the body wall musculature, immediately posterior to the cephalic ganglia (brain) and adjacent to the ventral nerve cords. The neoblast compartment, including piwi-1+, nanos+ primordial germ cells, fuel formation of the ovaries during juvenile development. PMID:22371573 PMID:23652002 PMID:27330085 NCIT:C12404 PMID:28434803 PMID:19247960 PMID:28812561 https://orcid.org/0000-0003-2569-1939 | https://orcid.org/0000-0002-7535-4407 Planarian_Anatomy PMID:22318224 ISBN:9780070316607 gonad prepharyngeal region