نتایج جستجو برای: gene effects

تعداد نتایج: 2546266  

Journal: :Nucleic acids research 2002
Rafael J Yáñez Andrew C G Porter

We describe gene targeting experiments involving a human cell line (RAN10) containing, in addition to its endogenous alleles, two ectopic alleles of the interferon-inducible gene 6-16. The frequency of gene targeting at one of the ectopic 6-16 alleles (H3.7) was 34-fold greater than the combined frequency of gene targeting involving endogenous 6-16 alleles in RAN10. Preference for H3.7 was main...

2002
Hylke Vandenbussche

This paper empirically tests the effects of Anti-Dumping (AD) protection on the price-cost margin of firms. To this end, we use a rich panel data set of 1,666 EU producers that were involved in AD cases initiated in 1996. Our findings indicate that price-cost margins in most cases significantly increase in the period of protection compared to a period before protection. In industries where comp...

Journal: :The American naturalist 2012
Sarah R Pryke Lee B Astheimer Simon C Griffith William A Buttemer

The relative contribution of genetic and environmental factors in determining variation in life-history traits is of central interest to evolutionary biologists, but the physiological mechanisms underlying these traits are still poorly understood. Here we experimentally demonstrate opposing effects of nutritional stress on immune function, endocrine physiology, parental care, and reproduction b...

Journal: :medical journal of islamic republic of iran 0
amir mehrgou department of medical genetics and molecular biology, school of medicine, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences) mansoureh akouchekian department of medical genetics and molecular biology, school of medicine, iran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی ایران (iran university of medical sciences)

many factors including genetic, environmental, and acquired are involved in breast cancer development across various societies. among all of these factors in families with a history of breast cancer throughout several generations, genetics, like predisposing genes to develop this disease, should be considered more. early detection of mutation carriers in these genes, in turn, can play an import...

Journal: :G3: Genes, Genomes, Genetics 2021

Abstract Microbial growth characteristics have long been used to investigate fundamental questions of biology. Colony-based high-throughput screens enable parallel fitness estimation thousands individual strains using colony as a proxy for fitness. However, is complicated by spatial biases affecting growth, including uneven nutrient distribution, agar surface irregularities, and batch effects. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

Journal: :Bioinformatics 2010
Theresa Scharl Bettina Grün Friedrich Leisch

SUMMARY Finite mixture models are routinely applied to time course microarray data. Due to the complexity and size of this type of data, the choice of good starting values plays an important role. So far initialization strategies have only been investigated for data from a mixture of multivariate normal distributions. In this work several initialization procedures are evaluated for mixtures of ...

2000
Karin Meyer

In animal breeding, knowledge of the genetic properties of the traits we are interested in is the first prerequisite in establishing a selection programme. Unless we are concerned with traits controlled by single or few genes, in which case we are generally more interested in gene frequencies, estimation of genetic parameters is synonymous with the estimation of variance components. In this con...

Background: The major effects of regular exercise on diabetes mellitus are glycemic status improvement and amelioration of cardiovascular dysfunctions. This research examines whether moderate-intensity aerobic exercise can change the gene expression of metalloproteinase-2 and angiostatin in diabetic rats' heart tissue. Materials & Methods: In this experimental study, thirty Wistar rats were ca...

Journal: :Environmental science. Nano 2023

Gene expression was more disrupted in the case of diet-borne exposure bivalves to NP-L (from Leyre River) compared NP-PS, accompanied by neurotoxic effects, synergistic effects with aluminium, and this, even after 7 days depuration.

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