Labelled Pronuclei in Mouse Eggs fertilized by Labelled Sperm
نویسندگان
چکیده
منابع مشابه
Algebras given by Labelled Quivers
In [3], Bautista and Salmeron explained how, given a finite quiver Z without double arrows or oriented cycles, certain sets of subsets of ZZ (called (P)-generating systems) may, under appropriate conditions, generate algebras whose preprojective components can be embedded in ZZ in a nice way, and which are (P)-algebras [2] whenever they are representation-finite. Here, we define numerical funct...
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We tested the ability of chromosomes in a mitotic cytoplasm to organize a bipolar spindle in the absence of centrosomes. Sea urchin eggs were treated with 5 X 10(-6) colcemid for 7-9 min before fertilization to block future microtubule assembly. Fertilization events were normal except that a sperm aster was not formed and the pronuclei remained up to 70 microns apart. After nuclear envelope bre...
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ژورنال
عنوان ژورنال: Nature
سال: 1956
ISSN: 0028-0836,1476-4687
DOI: 10.1038/177429a0