objectives lipid components of spermatozoa have an important role in its functional activity. in this study the concentration of cholesterol, phospholipid, triacylglycerol and total lipid in different subsets of human spermatozoa, isolated as three fractions by a discontinuous puresperm gradient, was determined. methods aliquots of the liquefied semen samples (n=107) were layered on top of the ...

introduction: the incidence of chromosomal abnormalities was investigated in untransfered embryos reuslted from in vitro fertilization (ivf) or intracytoplasmic sperm injection (icsi) procedures. materials and methods: a total of 238 embryos of varying morphology between the pronucleated stage and 8-cells were analysed. the cytogenetic method of dyban was used for chromosome preparation. embryo...

The Wnt-\ proto-oncogene is transcriptionally activated by mouse mammary tumor virus in mouse mammary tumor virus-induced tumors. Previous studies using transgenic mice showed that \\'nt-\ expression in mammary gland causes alveolar hyperplasias which resemble mam mary glands of pregnant mice. To understand the role of mammogenic hormones in the genesis of these hyperplasias, we examined the de...

The Wnt-1 proto-oncogene is transcriptionally activated by mouse mammary tumor virus in mouse mammary tumor virus-induced tumors. Previous studies using transgenic mice showed that Wnt-1 expression in mammary gland causes alveolar hyperplasias which resemble mammary glands of pregnant mice. To understand the role of mammogenic hormones in the genesis of these hyperplasias, we examined the devel...

The measurement or evaluation and clinical significance of human sperm morphology has always been and still is a controversial aspect of the semen analysis for the determination of a male's fertility potential. In this review the background of the development of the evaluation criteria for sperm morphology will be discussed. Aspects of criticism on the strict criteria definition and use of the ...

objective: to evaluate the effect of honey supplemented to cryoprotectant medium on post-thaw sperm motility, concentration, morphology and agglutination. materials and methods: thirty semen samples were collected from 30 infertile patients. after assessment of semen analysis, semen samples were divided into 3 aliquots (0.7ml for each) and mixed with 1 ml of cryopreservation solution (g1, contr...

A micromechanical model is presented to study the initiation and propagation of microcracks intermetallic compounds (IMCs) in solder joints. The effects grain aggregate morphology, boundary defects sensitivity various cohesive zone parameters predicting overall mechanical response are investigated. strength predominantly determined by weak interfaces; both morphology interfaces control crack co...

The pseudo-capacitance of RuO2, NiO, and MnO2 nano-particles supported on the various carbon nanofibers were examined. Among various CNFs, CNF with relatively higher crystallinity and better arranged edges on surface showed higher pseudo-capacitance than those with basal surface. Surface morphology and the particle size of metal oxide were characterized by HR-TEM and XPS. The electrochemical ca...

Assessment of brain ventricular size is an important factor in both the diagnosis and post-surgical evaluation of patients that may respond to shunt therapy for suspected cases of normal pressure hydrocephalus (NPH). A lack of currently accepted and standardized criteria for diagnosing and classifying NPH patients precludes objective identification. Currently, three clinical soft qualifiers are...