Work On Cellular Transport System Garners Nobel Prize For Three American; Relevance To Diabetes, Neurological, and Immunological Diseases

3 Americans Win Joint Nobel Prize In Medicine by Lawrence K. Altman.  The New York Times.  October 7, 2013.

(1)  Major molecules are moved around cells in small packages called _____________.

(2)  Each scientist discovered different facts that are need to ensure that ___________________________.