منابع مشابه
Cloned mouse cells with natural killer function and cloned suppressor T cells express ultrastructural and biochemical features not shared by cloned inducer T cells
We have examined the morphology, cytochemistry, and biochemistry of mouse leukocyte subsets by analyzing cloned leukocyte populations specialized to perform different immunologic functions. Cloned cells expressing high-affinity plasma membrane receptors for IgE and mediating natural killer (NK) lysis and cloned antigen-specific suppressor T cells contained prominent osmiophilic cytoplasmic gran...
متن کاملTreating Cloned Embryos, But Not Donor Cells, with 5-aza-2’-deoxycytidine Enhances the Developmental Competence of Porcine Cloned Embryos
The efficiency of cloning by somatic cell nuclear transfer (SCNT) has remained low. In most cloned embryos, epigenetic reprogramming is incomplete, and usually the genome is hypermethylated. The DNA methylation inhibitor 5-aza-2'-deoxycytidine (5-aza-dC) could improve the developmental competence of cow, pig, cat and human SCNT embryos in previous studies. However, the parameters of 5-aza-dC tr...
متن کاملCloned T Suppressor Cells BY YOSHIHIRO ASANO
The activation of antigen-specific B cell responses can be modulated by a number of T cell regulatory influences. It was first observed (1-3) that B cell responses to many antigens require the participation of T helper (Th) ~ cells. Studies (4, 5) using both heterogeneous and, more recently, cloned Th populations have shown that distinct B cell activation pathways exist in which Th cellB cell i...
متن کاملMice cloned from embryonic stem cells.
Cloning allows the asexual reproduction of selected individuals such that the offspring have an essentially identical nuclear genome. Cloning by nuclear transfer thus far has been reported only with freshly isolated cells and cells from primary cultures. We previously reported a method of cloning mice from adult somatic cells after nuclear transfer by microinjection. Here, we apply this method ...
متن کاملproduction of cloned mice by nuclear transfer of cumulus cells
background: over the past several years, mammals have been successfully cloned by either the splitting of an early stage embryo or nuclear transfer of adult somatic cells (nt) into oocytes. although it has been 15 years since the generation of the first cloned mammals from somatic cells by nt, the success rate for producing live offspring by this technique is low regardless of the cell type and...
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ژورنال
عنوان ژورنال: STEM CELLS
سال: 2007
ISSN: 1066-5099
DOI: 10.1634/stemcells.2005-0656