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Effect of cefsulodine on the percentage of heterocyst differentiation
| No. of days after induction | % Heterocysts at:
|
||
|---|---|---|---|
| 0 μg/ml | 50 μg/mla | 75 μg/mla | |
| 1 | 13 | 0 | 0 |
| 2 | 9.5 | 0 | 0 |
| 4 | 6.8 | 6.5 | 1.5 |
| 6 | 5.1 | 5.1 | 4.2 |
Cell growth was measured by spectroscopy at 700 nm; 50 μg of cefsulodine/ml reduced growth by 50%, and 75 μg/ml arrested cell growth almost completely.
