HOLLINSHEAD, Ariel née Cahill, American pharmacologist/immunochemist, b-1919. In the 1970s she was doing immunological research at George Washington U., and formulated a vaccine effective against all four major lung cancer types. By 1980 she had created a unique  ultrasonic technique for disrupting cell membranes. This special frequency sound application was effective and convenient to work with, it is used routinely to prepare antigens from cell surfaces. Now a standard procedure in most cell research labs. From 1974 she was the Professor of Medicine at George Washington Medical Center.