搜索结果: 1-9 共查到“sperm cells”相关记录9条 . 查询时间(0.086 秒)
Mechanism of superoxide dismutase loss from human sperm cells during cryopreservation
superoxide dismutase loss human sperm cells cryopreservation
2009/2/12
Earlier studies on human sperm cryodamage have shown that plasma membrane stress is the primary process and that phospholipid peroxidation in cryopreserved samples is not inhibited by addition of an...
The nuclear status of human sperm cells by TEM image cytometry：nuclear shape and chromatin texture in semen samples from fertile and infertile men
human sperm cells TEM image cytometry nuclear shape chromatin texture semen samples
2009/2/12
Changes in nuclear size, shape, and chromatin texture during spermiogenesis and epididymal transport of human sperm were recently analyzed using transmission electron microscopy (TEM) image cytome...
Protamine Levels Vary Between Individual Sperm Cells of Infertile Human Males and Correlate With Viability and DNA Integrity
Spermatogenesis male fertility
2008/12/24
Sperm protamine deficiency has been associated with human male infertility. However, most studies have adopted a global approach to assessing sperm protamine levels. Thus, it is not known whether...
Infertile Men With Varicocele Show a High Relative Proportion of Sperm Cells With Intense Nuclear Damage Level, Evidenced by the Sperm Chromatin Dispersion Test
Human sperm DNA fragmentation
2008/12/23
The frequency of sperm cells with fragmented DNA was studied in a group of 18 infertile patients with varicocele and compared with those obtained in a group of 51 normozoospermic patients, 103 patie...
Marked Differences in Protamine Content and P1/P2 Ratios in Sperm Cells From Percoll Fractions Between Patients and Controls
Chromatin condensation male infertility Percoll gradients sperm chromatin sperm morphology sperm motility
2008/12/19
The various sperm cell types present in a simple ejaculate differ in their motility and morphology. However, little is known about the nuclear maturity of these sperm cells and their relationship wi...
Epididymosomes and Prostasomes: Their Roles in Posttesticular Maturation of the Sperm Cells
Epididymosomes Prostasomes Posttesticular Maturation Sperm Cells
2008/12/19
The occurrence of membrane vesicles along the male reproductive tract and in the ejaculated semen appears as a common feature among different species, including humans. Indeed, prostasomes (prosta...
Real-time fine morphology of motile human sperm cells is associated with IVF-ICSI outcome
Real-time fine morphology motile human sperm cells IVF-ICSI outcome
2008/12/1
The aim of the present prospective study was to determine whether subtle sperm morphological characteristics affect the outcome of intracytoplasmic sperm injection (ICSI), and if so, to identify those...
Comparison of Genetic Parameter Estimates of Total Sperm Cells of Boars between Random Regression and Multiple Trait Animal Models
Genetic Correlation Boar Semen Random Regression Model Multiple Trait Animal Model
2016/4/28
The objective of this study was to compare random regression model and multiple trait animal model estimates of the (co) variance of total sperm cells over the active lifetime of AI boars. Data were p...
13 April 2007，Human bone marrow has been used to create early-stage sperm cells for the first time, a scientific step forward that will help researchers understand more about how sperm cells are creat...