Stable Photosymbiotic Relationship under CO2-Induced Acidification in the Acoel Worm Symsagittifera Roscoffensis Dupont, Sam ; Moya, Aurélie ; Bailly, Xavier Abstract Publication: PLoS ONE Pub Date: January 2012 DOI: 10.1371/journal.pone.0029568 Bibcode: 2012PLoSO...729568D