681 research outputs found
Evidence for prelocalization of cytoplasmic factors affecting gene activation in early embryogenesis
Differentiation begins early in embryogenesis as different genes become active in different cells. Within the closed system of the early embryo, equal genomes thus direct the creation of diverse cell types. Though the nuclei of these cells contain complete copies of the same genome,(1,2) the nucleoplasmic and cytoplasmic environments of these genomes are not the same, as a result of the distribution of cleavage nuclei into diverse areas of egg cytoplasm early in the cleavage process. In some cases the fate of these nuclei, i.e., the type of differentiated cell to which they or their descendants give rise, has been seen to depend on the area of cytoplasm in which they come to lie
Studies on Energy-Yielding Reactions in Thymus Nuclei. 2. Pathways of Aerobic Carbohydrate Catabolism.
Studies of Energy-Yielding Reactions in Thymus Nuclei. 1. Comparison of Nuclear and Mitochondrial Phosphorylation.
Studies on Energy-Yielding Reactions in Thymus Nuclei. 3. Participation of Glycolysis and the Citric Acid in Nuclear Adenosine Triphosphate Synthesis.
Isolation of active genes containing CAG repeats by DNA strand invasion by a peptide nucleic acid.
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