Natural Killer Cells

Famous quotes containing the words natural, killer and/or cells:

    Doubtless, we are as slow to conceive of Paradise as of Heaven, of a perfect natural as of a perfect spiritual world. We see how past ages have loitered and erred. “Is perhaps our generation free from irrationality and error? Have we perhaps reached now the summit of human wisdom, and need no more to look out for mental or physical improvement?” Undoubtedly, we are never so visionary as to be prepared for what the next hour may bring forth.
    Henry David Thoreau (1817–1862)

    If someone is burdened with the blood of another, let that killer be a fugitive until death; let no one offer assistance.
    Bible: Hebrew, Proverbs 28:17.

    The twelve Cells for Incorrigibles ... are also carved out of the solid rock hill. On the walls of one of the cells human “liberty” is clearly inscribed, with the “liberty” in significant quotation marks.
    —Administration in the State of Ariz, U.S. public relief program (1935-1943)