stem cell

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Related to mother cell: spore mother cell, microspore mother cell

stem cell

Histology an undifferentiated cell that gives rise to specialized cells, such as blood cells
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Stem Cell

 

a cell in the continuously renewing tissues of animals that is capable of developing in different directions, within the limits of tissue differentiation.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

stem cell

[′stem ‚sel]
(embryology)
A formative cell.
(histology)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The callose was deposited in the pollen mother cells at the onset of meiosis, reached a peak at metaphase II or anaphase II by enveloping the pollen mother cells or microtetrads (Fig.
In the invasive tapetum (sensu Tiwari & Gunning, 1986a), the pollen mother cells are in the centre of the anther locule surrounded by layers of tapetal cells, several cells thick, as shown in Costus and Globba [ILLUSTRATION FOR FIGURES 18, 19, 32, 33 OMITTED].
Microspores and pollen grains are produced from microspore mother cells (Microsporocytes), MMCs within loculus anthers (pollen sacs) of the flower.
It is larger and differentiated from the neighboring cells and then become the megaspore mother cell (mc).
The differential activation of signalling leads to two different kinds of cells which arise from the same mother cell, a reason why the researchers used the fruit flies sensory organ precursor cell division as a model to understand how Notch signalling is activated during asymmetric cell division.
Abbreviations: MMC, megaspore mother cell; SDR, second division restitution; FDR, first division restitution; 2nP, 2n pollen mutant; RAPD, random amplified polymorphic DNA; RFLP, restriction fragment length polymorphism.
Multicellularity might be achieved by allowing the mother cell to retain control over the daughter cell it creates.
Importantly, the work showed that when these stem cells are activated, they send signals back to the mother cells of the tissue to control the number of cells produced, through a molecular gene called Dlk1.
When these stem cells are activated, they then send signals back to the mother cells of the tissue to control the number of cells produced, through a molecular gene called Dlk1.
The subsequent meiotic analysis was conducted in Meiotic-I (MI) of pollen mother cells (PMC) of B.
Stem cells gathered from mouse embryos and plunged into a bath of chemicals turn into sperm mother cells known as a primordial germ cells.