Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"Sperm Selection"”.
-
Novel method of selecting human spermatozoa for <em>In </em><em>Vitro </em>fertilization
… is based on semen analysis when semen volume, sperm concentration, motility and morphology are evaluated. These characteristics help to assess how many spermatozoa are capable to get through the natural barriers of the female reproductive tract such as viscous cervical mucus, the uterus and …
-
Mechanisms and consequences of hybridisation between Atlantic salmon (Salmo salar) and brown trout (Salmo trutta)
… investigate mechanisms of hybridisation through sperm-egg interactions, much of which is poorly understood. Salmon and trout experience conspecific sperm precedence during in vitro sperm competition experiments, when sperm volumes and release times are equalised. This thesis firstly aimed to …
-
Aneuploidy and DNA fragmentation in morphologically abnormal sperm
Introduction: Intracytoplasmic sperm injection (ICSI) has been a successful assisted reproductive technique for men with severe male-factor infertility. However, ICSI requires the subjective selection of normal looking sperm, which does not preclude the transmission of genetically abnormal sperm. …
-
A study of the influence of sperm surface proteins on the activity of avian spermatozoa In-vitro and In-vivo
Chicken spermatozoa undergo a post-testicular maturation process similar to that reported for mammals. Association of secreted epididymal proteins and glycoproteins with the sperm surface appears to be complete at the anterior ductus deferens. However, antigenic change to, and glycosylation and …
-
Numerical Chromosome Abnormalities in Sperm From Oligoasthenoteratozoospermic Patients and Fertile Males
… is the potential importance of aneuploidy in sperm. To more clearly understand the cytogenetic make-up of sperm from OAT patients, multi-probe, multi-color FISH was performed to determine aneuploidy.</p> <p>The introduction of intracytoplasmic sperm injection (ICSI) has revolutionized …
-
Homologe intrauterine Insemination (IUI) im stimulierten Zyklus : Bedeutung von Spermiogrammparametern in Nativ-Spermiogrammen und nach Ejakulat-Aufbereitungen
… (BMI), for the fraction of local motil sperm in the basic spermiogram, for the percental change of the fraction of local motil sperm between the nativ and the processed spermiogram as well as for the percental change of the ratio between slowly progressiv and local motile sperm before …