Søviknes AM, Glover JC.

Biol Bull. 2008 Feb;214(1):17-28. doi:10.2307/25066656

Continued growth and cell proliferation into adulthood in the notochord of the appendicularian Oikopleura dioica.

Actin stained with phalloidin, DNA stained with To-Pro-3, and BrdU stained with antibodies. Dual H2S10p and BrdU staining in the adult notochord suggest cell proliferation.