Animals|CCAAT-Enhancer-Binding Protein-alpha|Cell Differentiation|Cell Lineage|Erythroid Precursor Cells|Feedback, Physiological|GATA1 Transcription Factor|Gene Expression Regulation, Developmental|Gene Regulatory Networks|Hematopoiesis|Homeodomain Proteins|Humans|Models, Genetic|Nuclear Proteins|Proto-Oncogene Proteins|Systems Biology|Trans-Activators|Transcription, Genetic|Transcriptional Activation