نتایج جستجو برای: population differentiation

تعداد نتایج: 900635  

Journal: :international journal of hematology-oncology and stem cell research 0
faten abo-aziza mohamed abo-aziza national research centre abd el-kader ahmed zaki cairo university

background: in the field of cellular therapy, the impact of confluence degree to harvest or differentiate bmmscs and the effect of cell-to-cell contact remains controversial. therefore, the effect of confluence on bmmscs properties was studied and confluence-associated osteogenic differentiation efficiency was identified. materials and methods: the impact of confluences at 20, 50, 70, 80 and 10...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2013
Peter Ashcroft Tobias Galla

We study the patterns generated in finite-time sweeps across symmetry-breaking bifurcations in individual-based models. Similar to the well-known Kibble-Zurek scenario of defect formation, large-scale patterns are generated when model parameters are varied slowly, whereas fast sweeps produce a large number of small domains. The symmetry breaking is triggered by intrinsic noise, originating from...

Journal: :Proceedings. Biological sciences 2000
C L Nesbø E K Rueness S A Iversen D W Skagen K S Jakobsen

Despite the resolving power of DNA markers, pelagic and migratory marine fish species generally show very little geographical population structuring. In mackerel (Scomber scombrus L.) population differentiation has been detected only at a transatlantic scale. By applying two regions in mitochondrial DNA (mtDNA) (D-loop and cytochrome b (cytb)) in combination with genealogical and frequency-base...

2012
Takeshi Nishiyama Hirohisa Kishino Sadao Suzuki Ryosuke Ando Hideshi Niimura Hirokazu Uemura Mikako Horita Keizo Ohnaka Nagato Kuriyama Haruo Mikami Naoyuki Takashima Keitaro Mastuo Yin Guang Kenji Wakai Nobuyuki Hamajima Hideo Tanaka

Uncovering population structure is important for properly conducting association studies and for examining the demographic history of a population. Here, we examined the Japanese population substructure using data from the Japan Multi-Institutional Collaborative Cohort (J-MICC), which covers all but the northern region of Japan. Using 222 autosomal loci from 4502 subjects, we investigated popul...

Journal: :The Journal of heredity 2015
Philip W Hedrick Sujeet Singh Jouni Aspi

Because male gene flow cannot easily be estimated directly in many organisms, Hedrick et al. (2013) provided an approach to estimate male gene flow given estimates of diploid nuclear and female differentiation. This approach appears to work well when there is lower female than male gene flow. However, in a tiger data set there was less female differentiation observed as estimated by mitochondri...

Fatemeh Malek Gholamreza Hassanzadeh, Iraj Ragerdi Kashani, Mohammad Akbari, Reza Mahmoudi Zolikha Golipoor

Objective(s) Bone marrow is the traditional source of human multipotent mesenchymal stem cells (MSCs), but adipose tissue appears to be an alternative and more readily available source. In this study, rat adipose-derived stem cells (ADSCs) were induced to differentiate into Schwann-like cells and compared with rat bone marrow stem cells (BMSCs) for their Schwann-like cells differentiation pote...

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