%0 Journal Article %T Optical tweezers-based immunosensor detects femtomolar concentrations of antigens %A Helmerson,, Kristian %A Kishore,, Rani %A Phillips, William, D %A Weetall, Howard, H %J Clinical Chemistry %V 43 %N 2 %P 379-383 %@ 0009-9147 %D 1997-02-01 %I Oxford Academic %~ DeepDyve