Neural Tube Closes

Famous quotes containing the words tube and/or closes:

    One of the great natural phenomena is the way in which a tube of toothpaste suddenly empties itself when it hears that you are planning a trip, so that when you come to pack it is just a twisted shell of its former self, with not even a cubic millimeter left to be squeezed out.
    Robert Benchley (1889–1945)

    It may be a mercy the dark closes round us
    So broodingly soon in every direction.
    Robert Frost (1874–1963)