sentences:  Helen became the personal secretary to Ernest O. Lawrence, who was director of what is now the Lawrence Berkeley National Laboratory and a recipient of the Nobel Prize in Physics.While working part-time for Lawrence in 1938, she met Glenn T. Seaborg, a scientist who frequently used Lawrence's cyclotrons to create new chemical isotopes, including several with applications in nuclear medicine.Seaborg dictated a telegram to Helen that was to be sent to "Physical Review".