Preface 1. Introduction 2. Hormones and signals 3. Cell-to-cell signalling - long distance and short distance 4. Population diversity of cell types and target identification in higher plants 5. Flexibility of cell types and the target cell status 6. Terminally committed cell types and the target status 7. The mechanisms of target cell perception and response to specific signals 8. Hormone action and the relief of repression 9. The phenomenon of hormonal crosstalk References.
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