Positive Selection

Positive selection may refer to:

  • Positive selection as an event during thymocyte maturation
  • Directional selection, a particular mode or mechanism of natural selection.

Famous quotes containing the words positive and/or selection:

    Regna regnis lupi, The State is a wolf unto the State. It is not a pessimistic lamentation like the old homo homini lupus [Man is a wolf to Man], but a positive creed and political ideal.
    Johan Huizinga (1872–1945)

    The books for young people say a great deal about the selection of Friends; it is because they really have nothing to say about Friends. They mean associates and confidants merely.
    Henry David Thoreau (1817–1862)