Results 271 to 280 of about 207,399 (316)

Transduction of CD34+ and CD34−/lin− hemopoietic progenitors by lentivirus vectors

Cytotherapy, 1999
While hemopoietic stem cells have been thought to reside predominantly in the CD34(+) population, recent data suggests that repopulating cells may, in fact, also reside in the lin(-)/CD34(-) population. Transduction of both these populations by murine retroviral vectors is limited by quiescence of hemopoietic stem cells.We therefore sought to transduce
K, Moriwaki, R E, Sutton, M, Perez, M K, Brenner, H E, Heslop   +4 more
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Molecular cloning of feline CD34

Veterinary Immunology and Immunopathology, 2003
In humans, baboons, dogs and mice CD34 is a cell surface molecule that is expressed on primitive hematopoietic cells and in all these species CD34 positive cells can be used to effect long-term haematopoietic reconstitution. CD34 positive haematopoietic cells therefore provide a convenient and relatively small cell population to target when attempting ...
Yogalingam, G., Anson, D.
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CD34‐positive eruptive fibromas

Journal of Cutaneous Pathology, 1998
The list of entities comprising a proliferation of CD34 (+) spindle cells continues to grow. Described, herein, is a patient who had an indolent eruption of scattered papules composed of CD34 (+) spindle cells, beginning in adolescence.An 18‐year‐old female patient presented with asymptomatic, tan/brown papules over the neck, chest, and proximal ...
H G, Pursley, P M, Williford, P A, Groben, W L, White   +3 more
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CD34 Immunophenotyping of Blasts in Myelodysplasia

Leukemia & Lymphoma, 1994
Immunological analysis of bone marrow cells in myelodysplasia using immunofluorescence did not allow accurate morphological identification of blast cells. However, improvement of the immunoperoxidase technique allows one to realize the diagnostic potential of immunocytochemistry.
J, Oertel, D, Huhn
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CD34 expression in desmoplastic melanoma

Journal of Cutaneous Pathology, 2001
Background: Primary and metastatic malignant melanoma can simulate various soft tissue tumors, including dermatofibrosarcoma protuberans (DFSP). Expression of CD34, a marker characteristic of DFSP, as well as other spindle cell tumors, has not been previously documented in malignant melanoma.Methods: We present here an unusual case of metastatic ...
M P, Hoang, M A, Selim, R C, Bentley, J L, Burchette, C R, Shea   +4 more
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Hematopoietic stem cells: Are they CD34-positive or CD34-negative?

Nature Medicine, 1998
New findings add to the growing evidence that some stem cells in the bone marrow do not express the CD34 marker, which is currently used to select stem cells for transplantation ( pages 1038–1045 ).
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Evaluation of Human and Rhesus CD34+CXCR4+ and CD34+CXCR4- Subpopulations

Blood, 2011
Abstract Abstract 1007 CXCR4 is an α-chemokine receptor specific for the ligand stromal-derived-factor-1 (SDF-1). CXCR4 is expressed on several cell types, including CD34+ cells. In this study, we sought to evaluate the difference between subpopulations of human and rhesus CD34+ cells that express CXCR4. Rhesus CD34+ cells
Naoya Uchida, Yu Tian, Ping Jin, Aylin C. Bonifacino, Mark E. Metzger, David Stroncek, John F. Tisdale, Robert E. Donahue   +7 more
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CD34+ Leukemic Cells Assessed by Different CD:34 Monoclonal Antibodies

Leukemia & Lymphoma, 1995
CD34 monoclonal antibodies (McAbs) are widely used to identify and isolate hemopoietic progenitors and to classify acute and chronic leukemias. We assessed the reactivity of 17 CD34 McAbs from the 5th International Workshop on Leukocyte Differentiation Antigens with a variety of cells types: normal bone marrow hemopoietic progenitors, 10 AML, 6 ALL, 11
LANZA, Francesco, MORETTI S, CASTAGNARI B, LATORRACA A, RIGOLIN, Gian Matteo, BARDI A, CASTOLDI, Gianluigi   +6 more
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New ways to count CD34

Cytotherapy, 2012
Today ’ s rapid development of new technologies, tools and reagents leaves many of us in search of reliable and detailed information about these new products. Product brochures provided by manufacturers and distributors often lack key information about performance and quality, and rarely include ...
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CD34 measurement: setting standards

Cytotherapy, 2014
Flow cytometric analysis has provided the hematopoietic transplant community with a powerful and rapid tool for assessing the engraftment potential of stem cell products. As described by Preti et al. [1] in this issue of the Journal, this was made possible by the identification of the CD34 antigen, and the commercial availability of fluorescently ...
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