Int J Syst Evol Microbiol 2002 52: 861-867
Different morphologies observed among Arthrospira strains
The cpcB--cpcA locus as a tool for the genetic characterization of the genus Arthrospira (Cyanobacteria): evidence for horizontal transfer, by J. F. Manen and J. Falquet
International Journal of Systematic and Evolutionary Microbiology vol. 52, part 3, pp. 861-867
Different morphologies observed among Arthrospira strains: A, rods (M2); B, relaxed spirals (Paracas P0); C, tight spirals (Lonar-LoH7). Tight spiral morphologies vary greatly upon cultivation conditions, whereas rod and relaxed spiral morphologies appear to be much more stable