Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Anna Niemierko"'
Publikováno v:
Human reproduction (Oxford, England). 16(7)
BACKGROUND The channel-forming antimicrobial peptide, magainin-2-amide, interacts preferentially with negatively charged, non cholesterol-containing membranes, including those of sperm, oocytes and cells of pre-implantation embryos. Cyclodextrin and
Autor:
Anna Niemierko
Publikováno v:
Reproduction. 73:313-316
The hardening of the zona pellucida as a result of the cortical reaction was estimated in triploid oocytes produced with cytochalasin B by two different procedures. Triploid oocytes resulting from fertilization in the presence of cytochalasin B did n
Autor:
Anna Niemierko
Publikováno v:
Development. 34:279-289
Mouse eggs fertilized in vivo were treated with cytochalasin B in vitro (5 µg/ml of culture medium) at the moment of extrusion of the second polar body (2·5, 3·0, 3·5 h after copulation). Cytochalasin B inhibits cytokinesis of the second maturati
Autor:
Anna Niemierko
Publikováno v:
Journal of embryology and experimental morphology. 66
By subjecting A strain eggs at the time of fertilization and polar body extrusion to 5 μg/ml cytochalasin B, digynic triploidy was produced in 80 % fertilized eggs. Triplonucleate eggs were transplanted to recipients and examined between 9–11th da
Autor:
Aldona Komar, Anna Niemierko
Publikováno v:
Journal of reproduction and fertility. 48(2)
Mouse eggs and spermatozoa were treated in various ways with 5 or 10 mug cytochalasin B/ml. The fertilization rate in vitro was reduced by treatment with the drug but 80-90% of the eggs fertilized were triploid. Many of the experimental eggs were pen
Publikováno v:
Journal of embryology and experimental morphology. 51
The degree of chimaerism of the coat, bone marrow and cornea in mouse chimaeras obtained by aggregation of an albino inbred embryo of A strain with an AxCBA-T6T6 hybrid was investigated. Out of 21 individuals born, 18 were chimaeras. Statistically si
Autor:
Aldona Komar, Anna Niemierko
Publikováno v:
Journal of embryology and experimental morphology. 90
Phorbol ester (PMA) in concentration 5 and 10 ng ml-1 blocks cytokinesis of the second maturation division in mouse oocytes. Karyokinesis is not impaired and digynic triploid oocytes are obtained which undergo first cleavage division. Effectiveness o