Light micrographs of isolated polycystine cells. Scale bar represents 20 μm. A–D. photosymbiotic nassellarians E. photosymbiotic solitary collodarian F–H. photosymbiotic spumellarians I–K. polycystines with visually ambiguous symbionts L–M. aposymbiotic polycystines. A. bios091, Carpocanium sp. B. bios070, Calimitra sp. C. bios108, Pterocorys sp. D. bios058, Acanthodesmia sp. E. bios066, Collosphaera sp. F. bios119, Didymocyrtis sp. G. bios075, Haliomma sp. H. bios114, spumellarian from the family Hexalonchidae I. bios021, Eucyrtidium sp. J. bios067, Hollandosphaera sp. K. bios004, Peromelissa sp. L. bios112, Lipmanella sp. M. bios074, Stylodictya sp.