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factor

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factor

1. Maths
a. one of two or more integers or polynomials whose product is a given integer or polynomial
b. an integer or polynomial that can be exactly divided into another integer or polynomial
2. Med any of several substances that participate in the clotting of blood
3. Law, Commerce a person who acts on another's behalf, esp one who transacts business for another
4. former name for a gene
5. Commercial law a person to whom goods are consigned for sale and who is paid a factorage
6. (in Scotland) the manager of an estate
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

factor

[′fak·tər]
(mathematics)
For an integer n, any integer which gives n when multiplied by another integer.
For a polynomial p, any polynomial which gives p when multiplied by another polynomial.
For a graph G, a spanning subgraph of G with at least one edge.
(statistics)
A quantity or a variable being studied in an experiment as a possible cause of variation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

factor

A quantity which is multiplied by another quantity.

See also divisor.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

factor

A number that divides evenly into another number. For example, 3 and 4 are factors of 12. See factorial and IFP.
Copyright © 1981-2025 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
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References in periodicals archive
(14,15,33) Stem cell factor is produced by fibroblasts, epithelial cells, and even by mast cells themselves and appears to be important in the development, activation, and upregulation of mature mast cells and to the induction of mast cell degranulation.
Presence of c-KIT-positive mast cells in obliterative bronchiolitis from diverse causes
"Stem cell factor is a key player" in liver regeneration, says Neil D.
Getting back to normal: protein enables the liver to regenerate quickly
In our experiment, stage X avian blastoderm cells with stem cell morphology and epitope profiles could be maintained with stem-like characteristics for a long term in vitro with the support of the DF-1 feeder and basic culture medium supplemented with only three cytokines: human basic fibroblast growth factor (hbFGF), mouse stem cell factor (mSCF), and human leukemia inhibitory factor (hLIF).
An Alternative Method for Long-Term Culture of Chicken Embryonic Stem Cell In Vitro
The growth factor stem cell factor, which stimulates mast cell development, was thought to be essential for the formation of mast cells.
New insight into how immune cells are formed
The combination of granulocyte colony-stimulating factor and stem cell factor significantly increases the number of bone marrow-derived endothelial cells in brains of mice following cerebral ischemia.
Cytokine expression patterns and mesenchymal stem cell karyotypes from the bone marrow microenvironment of patients with myelodysplastic syndromes
Briefly, the harvested cells were filtered through a 40 [micro]m cell strainer, centrifuged at 3000 rpm for 7 minutes, and resuspended in complete culture medium of Dulbecco's Modified Eagle Medium (DMEM) supplemented with 10% fetal bovine serum (FBS), 1% of Pen-Strep, 100 ng/mL stem cell factor (SCF), 10 ng/mL Interleukin-6 (IL-6), and 5 ng/mL Interleukin-3 (IL-3).
The role of Hibiscus sabdariffa L
Their findings point to a relationship between the cKit receptor found on mast cells and the transmembrane stem cell factor (SCF) ligand found on metastatic breast cancer cells.
`Intimate relationship` between metastatic breast cancer and arthritis identified
c-Kit, also known as CD117, is a transmembrane receptor for a growth factor, termed stem cell factor and has an internal tyrosine component.
c-Kit expression in spindle cell melanoma--a diagnostic pitfall in anorectal biopsy
In 2002, Amgen granted ViaCell a non-exclusive worldwide license to Stem Cell Factor (SCF), a novel growth factor developed by Amgen, for ex vivo therapeutic uses.
VIACELL/AMGEN SIGN COLLABORATION/LICENSE PACT
Other studies by the two research groups have now determined safe doses of a newer growth-factor product, human stem cell factor, which is produced by genetically engineered bacteria.
Mixed reviews for growth factors
We further investigated the roles of proliferation of epithelium and a possible stromal stem cell in induction of pulmonary PT by immunostaining for proliferating index (Ki-67) and thyroid transcription factor 1 (TTF-1) (11) and c-Kit antigen (a stem cell factor receptor/mast cell growth factor receptor).
Placental transmogrification of the lung is a histologic pattern frequently associated with pulmonary fibrochondromatous hamartoma. (Original Articles)
It was found that BMMSCs secrete a wide range of different cytokines/growth factors, including interleukins: IL-6, IL-7, IL-8, IL-11, IL-12, IL-14, IL-15, leukemia inhibitory factor (LIF), granulocyte colony-stimulating factor (G-CSF), granulocyte macrophage colony-stimulating factor (GM-CSF), macrophage colony-stimulating factor (M-SCF), Flt-3 ligand (FL), and stem cell factor (SCF) [51].
The Potential of Menstrual Blood-Derived Mesenchymal Stem Cells for Cartilage Repair and Regeneration: Novel Aspects
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