Germ cells possess the unique ability to acquire totipotency during development in vivo as well as give rise to pluripotent stem cells under the appropriate conditions in vitro. Recent studies in which somatic cells were experimentally converted into pluripotent stem cells revealed that genes expressed in primordial germ cells (PGCs), such as Oct3/4, Sox2,… (More)
Hematopoietic stem cells (HSCs) are maintained in a specific bone marrow (BM) niche in cavities formed by osteoclasts. Osteoclast-deficient mice are osteopetrotic and exhibit closed BM cavities. Osteoclast activity is inversely correlated with hematopoietic activity; however, how osteoclasts and the BM cavity potentially regulate hematopoiesis is not well… (More)
We suggest a semiparametric approach to analyze nonstationary signal. A Gamma probability density and maximum likelihood is employed to estimate the most model order and model coefficients on the assumption that model parameters are distributed on kernel density estimator with two hyper-paraneters. The innovation noise is no more identically distributed in… (More)
The purpose of this study is to give an experimental basis for the diagnosis of diseased eyes by using the electrical stimulation method. This paper describes the spectral differences in AC-EER (Electrically Evoked Response with Alternating Current stimulus) obtained by electrical stimulation of diseased and normal eyes.
The purpose of this study was to investigate the morphological variation of teeth of the partial anadontia with anhydrotic and hypohydrotic ectodermal dysplasia. Qualitative and quantitative observations were made for the upper central incisor and upper first molar in the anadontia of 18 patients. Moreover, some phylogenetic consideration was taken on the… (More)