The Differentiation of Rat Ova During Cleavage (Advances in Anatomy, Embryology and Cell Biology, 55/2)

1. Introduction and Notes on Materials and Methods.- 2. Submicroscopic Structure and Ultracytochemistry of Segmenting Rat Ova.- 2.1. One-Cell Ovum.- 2.1.1. Nucleus.- 2.1.2. Cytoplasm.- 2.1.3. Zona Pellucida.- 2.2. Two-Cell Ovum.- 2.2.1. Nucleus.- 2.2.2. Cytoplasm.- 2.2.3. Zona Pellucida.- 2.3. Four-Cell Ovum.- 2.3.1. Nucleus.- 2.3.2. Cytoplasm.- 2.3.3. Zona Pellucida.- 2.4. Eight-Cell Ovum.- 2.4.1. Nucleus.- 2.4.2. Cytoplasm.- 2.4.3. Zona Pellucida.- 2.5. Morula.- 2.5.1. Nucleus.- 2.5.2. Cytoplasm.- 2.5.3. Zona Pellucida.- 2.6. Early Blastocyst.- 2.6.1. Embryoblast Cells.- 2.6.2. Trophoblast Cells.- 2.6.3. Zona Pellucida.- 2.7. Late Blastocyst.- 2.7.1. Embryoblast Cells.- 2.7.2. Trophoblast Cells.- 2.7.3. Zona Pellucida.- 2.8. Conclusion.- 3. Morphologic and Functional Relationship During the Cleavage of Mammalian Ova.- 3.1. Surface Coats and Cell Contacts of the Ovum, Their Differentiation and Function During Cleavage.- 3.1.1. Some Remarks on the Structure and Function of the Cell Membrane, the Glycocalyx, and the Zona Pellucida.- 3.1.2. Morphology of the Ovum Surface During Cleavage.- 3.1.3. Development of Contacts and Junctional Structures Between the Cells of the Segmenting Ovum and the Blastocyst.- 3.1.4. Structure of the Zona Pellucida During Cleavage.- 3.1.5. Exchange of Substances Between the Segmenting Ovum and the Environment of the Tuba Uterina and the Uterus.- 3.1.6. Conclusion.- 3.2. Nucleus, Nucleoprotein Structures, and Proteosynthesis in the Segmenting Ova.- 3.2.1. Ultrastructure of the Nucleus, Ribosomes, and Granular Endoplasmic Reticulum in the Segmenting Mammalian Ova.- 3.2.2. Synthesis of DNA, RNA, and Proteins in the Segmenting Mammalian Ova..- 3.2.3. Conclusion.- 3.3. Mitochondria and Energetic Metabolism of Segmenting Ova.- 3.3.1. Principles of Energetic Metabolism of the Cell.- 3.3.2. Changes in Mitochondria During the Cleavage of the Mammalian Ovum.- 3.3.3. Energetic Metabolism of Mammalian Ovum.- 3.3.4. Conclusion.- 3.4. Lysosomes and Their Importance for the Differentiation and Nutrition of the Segmenting Ovum.- 3.4.1. Intracellular Hydrolysis and Lysosomal Conception.- 3.4.2. Forms and Representation of Lysosomes in the Segmenting Ovum.- 3.4.3. Conclusion.- 3.5. Occurrence of Stored Material and Its Metabolism in Segmenting Ova.- 3.5.1. Glycogen.- 3.5.2. Lipids.- 3.5.3. Proteins.- 3.5.4. Conclusion.- Summary.- References.