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Involvement of synaptonemal complex proteins in sex chromosome segregation during marsupial male meiosis
(PUBLIC LIBRARY SCIENCE, 2006-08)
Marsupial sex chromosomes break the rule that recombination during first meiotic prophase is necessary to ensure reductional segregation during first meiotic division. It is widely accepted that in marsupials X and Y ...
Mitochondrial distribution and meiotic progression in canine oocytes during in vivo and in vitro maturation
(Elsevier, 2011)
The objective was to evaluate mitochondrial distribution, and its relationship to meiotic development, in canine oocytes during
in vitro maturation (IVM) at 48, 72, and 96 h, compared to those that were non-matured or in ...
Effect of the presence and location of corpus luteum on competence of bovine cumulus-oocyte complexes
(2022)
This study aimed to determine the effect of presence of the corpus luteum (CL) and its influence on cumulus–oocyte complexes (COCs) obtained from the ipsilateral or contralateral ovary in bovine on the recovery and capacity ...
Effect of human chorionic gonadotrophin supplementation during different culture periods on in vitro maturation of canine oocytes
(ELSEVIER SCIENCE INC, 2005-07-01)
he IVM of canine oocytes is characterized by low rates of metaphase H. The objective of this study was to evaluate the effects of hCG on mciotic development of canine oocytes for culture periods up to 96 h. Oocytes were ...
Structure and development of the egg of the glossiphoniid leech Theromyzon rude: Characterization of developmental stages and structure of the early uncleaved egg
(1987)
Some aspects of the reproductive biology of the glossiphoniid leech, Theromyzon rude, under laboratory conditions, and the staging and structure of its uncleaved egg were studied. Sexually mature animals form breeding ...
Effects of A and B ultraviolet irradiation on human lymphocytes Efectos de la radiación ultravioleta A y B sobre linfocitos humanos.
(1994)
Over the last decade, a greater decrease in the ozone level has occurred in the Southern Hemisphere. For each 1% decrease in this level, a 2% increase in biologically effective radiation occurs. Aiming to evaluate the ...
Characterization of sex chromosomes in rainbow trout and coho salmon using fluorescence in situ hybridization (FISH)
(2001)
With the aim of characterizing the sex chromosomes of rainbow trout (Oncorhynchus mykiss) and to identify the sex chromosomes of coho salmon (O. kisutch), we used molecular markers OmyP9, 5S rDNA, and a growth hormone gene ...
Expression and behaviour of CENP-E at kinetochores during mouse spermatogenesis
(2002)
Centromere protein E (CENP-E) is a microtubule motor protein localised in the outer kinetochore plate and in the fibrous corona that relocalises to the midzone in early anaphase. While its expression in somatic cells has ...
G2 checkpoint-dependent DNA repair and its response to catalase in Down syndrome and control lymphocyte cultures
(2007)
The amount of DNA lesions repaired in G2 and also G2 timing are controlled by the DNA damage-dependent checkpoint. Down syndrome (DS) lymphocytes showed twice as much constitutive DNA damage in G2 than control ones, when ...
Expression of growth differentiation factor 9 (GDF-9) during invitro maturation in canine oocytes
(2013)
The aim of this study was to characterize in canine oocytes and cumulus cells the dynamic expression of growth differentiation factor 9 (GDF-9) in relation to meiotic development and cumulus expansion throughout invitro ...