8 15 Cell differentiation 15.1 Outline The concept of cell differentiation Determination or commitment Totipotency, Pluripotency and Monopotency Developmental landscape model 5.2 Cell differentiation resulting from the expression of specific gene house keeping gene and luxury gene regultory gene and temporal gene 15.3 The genetic control of The cell differentiation 14 4 The influences of environmental factors on cell differentiation 14.5 The maintaining of cell differentiation 14.6 Development and cell differentiation§ 15. Cell differentiation 15.1 Outline The concept of cell differentiation Determination or commitment Totipotency, Pluripotency and Monopotency Developmental landscape model 15.2 Cell differentiation resulting from the expression of specific genes house keeping gene and luxury gene regultory gene and temporal gene 15.3 The genetic control of The cell differentiation 14.4 The influences of environmental factors on cell differentiation 14.5 The maintaining of cell differentiation 14.6 Development and cell differentiation