Discovery of an Endosymbiotic Nitrogen-Fixing Cyanobacterium UCYN-A in Braarudosphaera bigelowii (Prymnesiophyceae) Hagino, Kyoko ; Onuma, Ryo ; Kawachi, Masanobu ; Horiguchi, Takeo Abstract Publication: PLoS ONE Pub Date: December 2013 DOI: 10.1371/journal.pone.0081749 Bibcode: 2013PLoSO...881749H