Immunoregulation Immune System Cell Signaling Gene Expression Inflammation Immune Response Pathogens Therapy Disease Management Clinical Applications Epigenetics Dna Methylation Histone Modification Gene Regulation Chromatin Structure Transcription Factors Cancer Research Developmental Biology Neuroscience Aging Metabolism Metabolic Pathways Enzymes Energy Production Cell Metabolism Biochemical Reactions Nutrient Absorption Hormonal Regulation Metabolic Disorders Diabetes