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Autor:
Mary Lee Barber
Publikováno v:
American Zoologist. 19:821-837
Membrane enriched fractions of eggs show changes in relative lipid and acylglyceride fatty acid content at maturation and fertilization, when many critical membrane changes occur. Many of the changes in lipids seen at fertilization in sea urchins are
Autor:
Mary Lee Barber, James F. Mead
Publikováno v:
Wilhelm Roux's Archives of Developmental Biology. 177:19-27
Lipids from surface ghosts, prepared from sea urchin eggs before and after fertilization, differ in the relative proportions of neutral and polar lipids. Percents of triglyceride and phosphatidyl serine or inositol increase while percent phosphatidyl
Autor:
Mary Lee Barber, James E. Foy
Publikováno v:
Journal of Experimental Zoology. 184:157-165
Ghosts were prepared from sea urchin eggs, before and after fertilization. Eggs were treated with Mg++ to stabilize the surface. Cytoplasm was then released by osmotically lysing the cells and washing repeatedly at low ionic strength. Microscopically
Publikováno v:
Developmental Biology. 33:218-223
Sea urchin embryos incubated in sea water containing mycostatin (MST), a polyene antibiotic, dissociate into single cells. Reaggregation of dissociated sea urchin embryo cells, and uptake of labeled precursors by these cells are also greatly inhibite
Autor:
Mary Lee Barber, Foster R. Montalbano
Publikováno v:
Differentiation and Development
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::579feabf818bbc5389f730201e02978c
https://doi.org/10.1016/b978-0-12-045450-1.50036-6
https://doi.org/10.1016/b978-0-12-045450-1.50036-6
Publikováno v:
The Journal of experimental zoology. 219(3)
The electrophoretic pattern of G6PD changes in sea urchin egg supernatants, gels, and pellets (homogenized in 0.01 M MgCl2, 0.01 M Tris, pH 8, and centrifuged at 4 × 104g) within the first minute following sperm penetration. Therefore, the changes i
Comparison of glucose-6-phosphatase activity in unfertilized and fertilized sea urchin egg fractions
Autor:
James E. Foy, Mary Lee Barber
Publikováno v:
Mechanisms of ageing and development. 2(2)
Glucose-6-phosphatase specific activity was assayed in surface ghost fragments, cytomembranes from egg lysates, and whole cell homogenates of unfertilized and fertilized sea urchin eggs. Ghost preparations of unfertilized eggs contain more glucose-6-