Results 1 to 10 of about 7,362,319 (231)
A cell complex in number theory [PDF]
Advances in Applied Mathematics, 2011 Let De_n be the simplicial complex of squarefree positive integers less than or equal to n ordered by divisibility. It is known that the asymptotic rate of growth of its Euler characteristic (the Mertens function) is closely related to deep properties of the prime number system.
Anders Björner +7 more
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Circulating cells and dialysis: improving cell number or increasing session number? [PDF]
Nephrology Dialysis Transplantation, 2010 1. Gornall J. Stem cell renegades or pioneers? BMJ 2010; 340: c2041 2. Kaiser J, Vogel G. Embryonic stem cells. Controversial ruling throws U.S. research into a tailspin. Science 2010; 329: 1132–1133 3. Takahashi K, Tanabe K, Ohnuki M et al. Induction of pluripotent stem cells from adult human fibroblasts by defined factors.
Monge, M. +2 more
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Variable cell number in nematodes [PDF]
Nature, 1999 Studies of the nematode worm Caenorhabditis elegans have led to the widely held belief that individuals of a given nematode species are characterized by a property known as eutely, in which all individuals have the same total number of cells1. This property, which is peculiar to nematodes and a few other phyla, has raised the question of whether the ...
Armand M. Leroi +3 more
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The roles of cell size and cell number in determining ovariole number in Drosophila
Developmental Biology, 2012 All insect ovaries are composed of functional units called ovarioles, which contain sequentially developing egg chambers. The number of ovarioles varies between and within species. Ovariole number is an important determinant of fecundity and thus affects individual fitness.
Sarikaya, Didem Pelin +5 more
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Inflating Cell Numbers by Wnt [PDF]
Molecular Cell, 2002 One of the prominent biological phenomena controlled by Wnt signaling is the expansion of cells with predefined fates. In the November 27, 2002, issue of Cell, Rosenfeld and colleagues describe an example of Wnt-controlled proliferation during genesis of the cardiac outflow tract and the pituitary gland.
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A cell number counting factor alters cell metabolism [PDF]
Communicative & Integrative Biology, 2009 It is still not clear how organisms regulate the size of appendages or organs during development. During development, Dictyostelium discoideum cells form groups of approximately 2 x 10(4) cells. The cells secrete a protein complex called counting factor (CF) that allows them to sense the local cell density.
Owen G. Schwartz +2 more
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Effects of teicoplanin on cell number of cultured cell lines [PDF]
Interdisciplinary Toxicology, 2015 Abstract Teicoplanin is a glycopeptide antibiotic with a wide variation in human serum half-life. It is also a valuable alternative of vancomycin. There is however no study on its effect on cultured cells. The aim of the present study was to test the effect of teicoplanin on cultured cell lines CHO, Jurkat E6.1 and MCF-7.
Mostafa Saadat +2 more
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The autoregulation of retinal ganglion cell number [PDF]
Development, 2001 ABSTRACT The development of the nervous system is dependent on a complex set of signals whose precise co-ordination ensures that the correct number of neurones are generated. This regulation is achieved through a variety of cues that influence both the generation and the maintenance of neurones during development.
González-Hoyuela, M. +2 more
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Intraoperative cell salvage: The impact on immune cell numbers
PLOS ONE, 2023 Background Patient outcomes are influenced by many confounding factors peri-operatively, including the type of surgery, anaesthesia, transfusion, and immune competence. We have previously demonstrated (in-vitro) that compared to allogeneic blood transfusion (ABT), intraoperative cell salvage (ICS) improves immune competence.
Michelle Roets +8 more
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Boosting Beta-Cell Numbers [PDF]
New England Journal of Medicine, 2008 The introduction of three transcription factors into the pancreatic acinar cell of the mouse induces transdifferentiation to an insulin-secreting beta cell.
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