Resembles the subcommisural organ structurally, ultrastructurally and immunochemically[Niewenhuys] Gives rise to Reissner's fiber; however secretions are not identical to those of SCO [PMID:9550137][DOI:10.1007/BF00303086]
Synonyms:
exact_synonym:
infundibular organ of Boeke; ventral infundibular organ