Adenosine Triphosphate, Animals, Binding Sites, CHO Cells, Cell Nucleus, Cricetinae, Cricetulus, DNA-Binding Proteins, Early Growth Response Protein 1, Gene Expression, Genes, Immediate-Early, Humans, Immediate-Early Proteins, In Situ Hybridization, Insulin, Interleukin 1 Receptor Antagonist Protein, Kinetics, Microscopy, Electron, Mutagenesis, Site-Directed, Phosphorylation, RNA, Messenger, Receptor, Insulin, Sialoglycoproteins, Signal Transduction, Transcription Factors, Transcription, Genetic, Zinc Fingers