What is stimulating factor?

Some articles on stimulating factor:

Macrophage Colony-stimulating Factor
... Macrophage colony-stimulating factor, or M-CSF, is a secreted cytokine which influences hematopoietic stem cells to differentiate into macrophages or ... (See colony-stimulating factor.) M-CSF binds to the Colony stimulating factor 1 receptor ...

Famous quotes containing the words factor and/or stimulating:

    Children of the middle years do not do their learning unaffected by attendant feelings of interest, boredom, success, failure, chagrin, joy, humiliation, pleasure, distress and delight. They are whole children responding in a total way, and what they feel is a constant factor that can be constructive or destructive in any learning situation.
    Dorothy H. Cohen (20th century)

    An imaginative book renders us much more service at first, by stimulating us through its tropes, than afterward, when we arrive at the precise sense of the author. I think nothing is of any value in books, excepting the transcendental and extraordinary.
    Ralph Waldo Emerson (1803–1882)