Ganot P, Bouquet JM, Kallesøe T, Thompson EM.

Dev Biol. 2007 Feb 15;302(2):591-600 doi:10.1016/j.ydbio.2006.10.021

The Oikopleura coenocyst, a unique chordate germ cell permitting rapid, extensive modulation of oocyte production.

The coenocyst is a syncytium containing nurse nuclei and meiotic nuclei surrounded by their cytoplasms and connected by ring channels. Figure 1p of spawned oocytes in cortical metaphase I shows 3 DNA masses. Germline-specific expression of Vasa.