Composition and Extraction of Egg Components.- Composition and Structure of Hen Egg Yolk.- Low-density Lipoproteins (LDL) or Lipovitellenin Fraction.- High-density Lipoproteins (HDL) or Lipovitellin Fraction.- Phosvitin.- Livetin Fractions (IgY).- Lysozyme.- Ovotransferrin.- Ovalbumin and Gene-Related Proteins.- Ovomucin.- Riboflavin-Binding Protein (Flavoprotein).- Avidin.- Proteases.- Antiproteases.- Minor Proteins.- Structure and Formation of the Eggshell.- Eggshell Matrix Proteins.- Function of Eggshell Matrix Proteins.- Use of Egg Compounds for Human Nutrition.- Nutritional Evaluation of Egg Compounds.- Concepts of Hypoallergenicity.- Egg Enrichment in Omega-3 Fatty Acids.- Enrichment in Vitamins.- Enrichment in Selenium and Other Trace Elements.- Use of Eggs for Human/Animal Health and Biotechnology.- Compounds with Antibacterial Activity.- Egg-Protein-Derived Peptides with Antihypertensive Activity.- Use of IgY Antibodies in Human and Veterinary Medicine.- Egg Compounds with Antioxidant and Mineral Binding Properties.- Use of Lecithin and Lecithin Fractions.- Extraction of Several Egg Compounds at a Pilot Scale.- Use of Egg Compounds for Cosmetics and Pharmaceutics.- Use of Egg Compounds for Cryoprotection of Spermatozoa.- Egg-Protein-Based Films and Coatings.- Magnetic Particles for Egg Research.- Avidin-Biotin Technology.