Objective: Approximately 15-20% of clinically recognizable pregnancies end in spontaneous abortion. The incidence of chromosomal abnormalities in those abortions is as high as 50%.A modest but clinically important proportion of spontaneous abortions is caused by a balanced chromosomal aberration in one o...

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Background Chromosomal abnormalities are common in embryos from assisted reproductive technology, ranging from 60% abnormal embryos in women

Bacillus anthracis, the causative agent of anthrax in humans, livestock, and wildlife, exists a community with hundreds other species bacteria environment. Work on genetics these communities has shown that B. anthracis shares high percentage chromosomal genes both thuringiensis cereus, phenotypic differences among can result from extra-chromosomal DNA form plasmids. We developed simple hypothet...

The frequency of chromosomal aberrations was studied in the peripheral blood lymphocytes of 65 radiology technologists CRT) working at hospitals chronically exposed to x-rays. Although film dosimetry did not show the maximal annual permitted dose in any of the examined subjects, cytogenetic analysis detected fairly high levels of chromosomal aberrations in R T compared to unexposed controls...

Bloom syndrome is a rare autosomal recessive genetic disorder, which is characterized by telangiectasia and erythema in the butterfly area of the face, dwarfism and photosensitivity. The case presented herein is a 22-year-old man who referred with facial erythema and telangiectasia (Resembling lupus erythematosus). The skin lesions were exacerbating during summer. Other clinical findings were p...