نتایج جستجو برای: sscs

تعداد نتایج: 935  

Journal: :iranian journal of veterinary science and technology 0
sajjad sisakhtnezhad ahmad r. bahrami maryam m. matin hesam dehghani fatemeh b. rassouli madjid momeni-moghaddamd

poultry spermatogonial stem cells (sscs) have the potential to serve as a model for studying the basic biology of ssc and they can also be used for biotechnological purposes. however, the small number of sscs and the presence of the testicular somatic cells with sscs have limited their applications. therefore, this study was undertaken for the first time to investigate the effect of a serum-fre...

Journal: :IEEE Trans. Information Theory 1991
Hirosuke Yamamoto

A coding theorem is proved for the secret sharing communication system (SSCS) with two Gaussian wiretap channels. This communication system is an extension of both the SSCS with two noiseless channels and the Gaussian wiretap channel (GWC). The admissible region of rates and security levels for the SSCS with two GWC’s is described by the capacities and secrecy capacities of two GWC’s.

2013
Narong TIPTANAVATTANA Chommanart THONGKITTIDILOK Mongkol TECHAKUMPHU Theerawat THARASANIT

Spermatogonial stem cells (SSCs) function to regulate the balance of self-renewal and differentiation of male gametes. SSCs have been successfully isolated and cultured in vitro in several species, but not in feline. Therefore, in this study, we aimed to culture and characterize feline SSCs. In experiment 1, testes (n=5) from different pubertal domestic cats were cryosectioned and fluorescently...

2017
Louisa C.Y. Lee Nikolaj Gadegaard María C. de Andrés Lesley-Anne Turner Karl V. Burgess Stephen J. Yarwood Julia Wells Manuel Salmeron-Sanchez Dominic Meek Richard O.C. Oreffo Matthew J. Dalby

In culture isolated bone marrow mesenchymal stem cells (more precisely termed skeletal stem cells, SSCs) spontaneously differentiate into fibroblasts, preventing the growth of large numbers of multipotent SSCs for use in regenerative medicine. However, the mechanisms that regulate the expansion of SSCs, while maintaining multipotency and preventing fibroblastic differentiation are poorly unders...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Hiroshi Kubota Mary R Avarbock Ralph L Brinster

Spermatogonial stem cells (SSCs) are responsible for maintaining spermatogenesis throughout life in the male by continuous production of daughter cells that differentiate into spermatozoa. However, no unique phenotypic markers to identify SSCs have been described. In this study, the SSC surface phenotype was characterized by using flow cytometric cell sorting in conjunction with a transplantati...

2016
Anil Kumar Sujata Mohanty Sushmita Bose Nandy Somesh Gupta Binod K. Khaitan Shilpa Sharma Balram Bhargava Balram Airan

BACKGROUND & OBJECTIVES Skin is an established tissue source for cell based therapy. The hair follicle has been introduced later as a tissue source for cell based therapy. The ease of tissue harvest and multipotent nature of the resident stem cells in skin and hair follicle has promoted basic and clinical research in this area. This study was conducted to evaluate skin stem cells (SSCs) and hai...

Journal: :Acta medica Iranica 2013
Bagher Minaee Zanganeh Tayebeh Rastegar Mehryar Habibi Roudkenar Iraj Ragerdi Kashani Fardin Amidi Farid Abolhasani Mohammad Barbarestani

Spermatogonial stem cells (SSCs) maintain spermatogenesis throughout life in the male. Maintenance of SSCs and induction of spermiogenesis in vitro may provide a therapeutic strategy to treat male infertility. This study investigated in vitro differentiation of mouse SSCs in presence or absence of Sertoli cells, hormones and vitamins. Spermatogonial populations were enriched from testes of 4-6 ...

Journal: :Journal of clinical microbiology 2013
Blake W Buchan Wendy J Olson Michael Pezewski Mario J Marcon Thomas Novicki Timothy S Uphoff Lakshmi Chandramohan Paula Revell Nathan A Ledeboer

Enteric illness affects millions of individuals annually in the United States and results in >50,000 hospitalizations. The rapid and accurate identification of bacterial pathogens associated with gastroenteritis can aid acute patient management decisions, including the use of antibiotic therapy and infection control. This study compared the ProGastro SSCS multiplex real-time PCR assay (Gen-Prob...

2007
Nate McCrady James R. Graham

We use high-resolution near-infrared spectroscopy from Keck Observatory to measure the stellar velocity dispersions of 19 super star clusters (SSCs) in the nuclear starburst of M82. The clusters have ages on the order of 10 Myr, which is many times longer than the crossing times implied by their velocity dispersions and radii. We therefore apply the Virial Theorem to derive the kinematic mass f...

2014
Jung Jin Lim Dong Won Seol Kyung Hee Choi Dong Hyuk Shin Hyung Joon Kim Seung-Hun Song Dong Ryul Lee

Enrichment of spermatogonial stem cells (SSCs) from the mammalian adult testis faces several limitations owing to their relatively low numbers among many types of advanced germ cells and somatic cells. The aim of the present study was to improve the isolation efficiency of SSCs using a simple tissue grafting method to eliminate the existing advanced germ cells. Sliced testis parenchyma obtained...

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