Previous Article Next Article Table of Contents Science, Vol.282, No.5390, 891-892, 1998 DOI10.1126/science.282.5390.891 Export Citation Development - How Cyanobacteria count to 10 Haselkorn R Keywords:HETEROCYST DIFFERENTIATION;ANABAENA;PCC-7120 Please enable JavaScript to view the comments powered by Disqus.