Less than twenty years ago photolithography and medicine were total strangers to one another.Theyhadnotyetmet, andnotevenlookingeachotherupintheclassi?eds.And then, nucleicacidchips, micro?uidicsandmicroarraysenteredthescene, andrapidlythese strangersbecameindispensablepartnersinbiomedicine. Asrecentlyastenyearsagothenotionofapplyingnanotechnologytothe?ghtagainstd- easewasdominantlytheprovinceofthe?ctionwriters.Thoughtsofnanoparticle-vehicled deliveryoftherapeuticalstodiseasedsiteswereanexerciseinscienti?csolitude, andgrounds for questioning one's ability to think "like an established...