Some articles on cell populations, cells, population, cell:
... Cell populations go through a particular type of exponential growth called doubling ... Thus, each generation of cells should be twice as numerous as the previous generation ...
... T regulatory cells are a component of the immune system that suppress immune responses of other cells ... Regulatory T cells come in many forms with the most well-understood being those that express CD4, CD25, and Foxp3 (CD4+CD25+ regulatory T cells, or "Tregs") ... These cells are involved in shutting down immune responses after they have successfully eliminated invading organisms, and also in preventing autoimmunity ...
... spermatogonia gave rise to spermatocytes, which then differentiated into mature sperm cells in a specific cycle ... To maintain the population of spermatogonia, the seminiferous epithelium was shown to contain a population of stem cells which divided to produce differentiated cells as well as to maintain their own number ... in a seminal publication by Leblond, "the reappearance at each cycle of a new dormant cell which acts as the stem cell of spermatocytes is described as the 'Stem Cell Renewal Theory'" ...
... To explain how anterior and posterior cells are kept separated, the differential adhesion hypothesis proposes that these two cell populations express different adhesion molecules, producing different affinities ... affinity model proposes that difference in cell affinity between compartments is a result of differential selector gene expression ... engrailed expressed in the posterior, but not the anterior, cells provides the differential affinity that keeps these compartments separately ...
Famous quotes containing the words populations and/or cell:
“The populations of Pwllheli, Criccieth,
Portmadoc, Borth, Tremadoc, Penrhyndeudraeth,
Were all assembled. Criccieths mayor addressed them
First in good Welsh and then in fluent English,”
—Robert Graves (18951985)
“She that but little patience knew,
From childhood on, had now so much
A grey gull lost its fear and flew
Down to her cell and there alit,
And there endured her fingers touch
And from her fingers ate its bit.”
—William Butler Yeats (18651939)