Genetics: H. H. Plough Elimination of Self-sterility in the Styela Egg-a Re-interpretation with Further Experiments by Harold
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Effect of egg yolk of four avian species on the cryopreserved ram spermatozoa
Egg yolk is the most commonly used cryoprotective agent for sperm cryopreservation of several species.The objective of this experiment was to compare the effectiveness of egg yolk from four avian species(domestic chicken, duck, turkey and pigeon) on sperm quality following cryopreservation of the ram semen.Ejaculates were collected, using an electroejaculator, from six fertile rams. Samples wer...
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An experimental investigation is conducted to determine the effect of repeated-plate blockages of variable streamwise spacing on heat transfer characteristics of turbulent flow in rectangular ducts. The plates are attached to the upper and lower walls in a staggered arrangement. The experiments are carried out by mass transfer and the analogy between heat and mass transfer provides the necessar...
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Background One of the main causes of male infertility is defect in structure and function of sperm cells. Infertile men with oligoasthenoteratospermia (OAT) defect, have sperms with abnormalities in count, motility and morphology. Patients with immotile short tail sperm (ISTS) disorder have immotile short-tailed sperm with disorganized axonem, and a significant decrease in sperm counts. Numerou...
متن کاملThe Effect of Prolonged Culture of Chromosomally Abnormal Human Embryos on The Rate of Diploid Cells
Background A decrease in aneuploidy rate following a prolonged co-culture of human blastocysts has been reported. As co-culture is not routinely used in assisted reproductive technology, the present study aimed to evaluate the effect of the prolonged single culture on the rate of diploid cells in human embryos with aneuploidies. MaterialsAndMethods In this cohort study, we used fluorescence in ...
متن کاملThe possible role of dental plaque as extra-gastric reservoir of Helicobacter pylori in gastric re-infection: A science-metric study
BACKGROUND AND AIM: Helicobacter pylori (H. pylori) infection is one of the most common infections which still affects individuals worldwide. The main route for transmission of H. pylori infection is the oral route and this microorganism has been detected in dental plaque. In past decades, there have been a number of controversies about the station of dental pl...
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تاریخ انتشار 2005