Measurement of an inhibitory zone

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Science  27 Feb 1976:
Vol. 191, Issue 4229, pp. 866-868
DOI: 10.1126/science.814620


An inhibitory zone mechanism generates the heterocyst pattern in Anabaena. These inhibitory zones can be measured; we find that they extend about five cells on either side of a heterocyst. We can use our observations to predict with reasonable accuracy which cells in the filaments will differentiate into heterocysts.

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