نتایج جستجو برای: chromosomal abmormalities
تعداد نتایج: 47372 فیلتر نتایج به سال:
Objective To verify the hypothesis that the incidence of chromosomal abnormalities increases in babies conceived by different assisted reproduction procedures. The availability of the umbilical cord blood encouraged us to study this hypothesis via this method. MaterialsAndMethods This is a descriptive study, umbilical cord blood samples of assisted reproductive technology (ART) children were an...
several lichen species have been used for medicinal purposes throughout the ages, and they were reported to be effective in the treatment of different disorders including tuberculosis, hemorrhoids, ulcer, dysentery and cancer. it is revealed that they may be easily accessible sources of natural drugs that could be used as a possible food supplement or in pharmaceutical industry after their safe...
Background and Objective: Discovery of genetic changes which contribute to cellular neoplastic and malignant tumor transformation is one of the major aims in oncology researches. The aim of this study was to investigate the DMBA-induced breast cancer in SD rat strains using bioinformatical methods and also to find their homologous regions in human chromosomes. Materials and Methods: In this res...
Application of nuclear magnetic resonance imaging (NMRI) as a non-invasive and accurate imaging procedure has been widely used in recent years. Meanwhile, the biological effects of magnetic fields of several tesla (T) and high energy radiofrequency (RF) is not fully known yet. Because of controversy over this issue, the present research has been carried out in order to verify the effects of...
Introduction: Intellectual disability or intellectual retardation is a condition in which total mental functioning is distinctively below average and there are disabilities in adaptive behaviors during growth. According to the definition of American Mental Disability Community in 1992 a person is considered intellectually disabled if he or she has an IQ (intelligence quotient) of less than 70...
Impact of sperm chromosomal abnormalities on the chromosomal constitution of preimplantation embryos
BACKGROUND The prevalence of chromosomal abnormalities is assumed to be higher in infertile men and inversely correlated with sperm concentration. Although guidelines advise karyotyping infertile men, karyotyping is costly, therefore it would be of benefit to identify men with the highest risk of chromosomal abnormalities, possibly by using parameters other than sperm concentration. The aim of ...
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