The biography of Rosalyn Yalow, as told by her longtime friend and colleague Eugene Straus, is the story of a woman who prevailed against class and gender prejudice to reach the pinnacle of the science world. Yalow's story is related against the backdrop of her later years, when, after having won the Nobel Prize in medicine for inventing a revolutionary test for certain kinds of hormones, she was suddenly felled by a stroke and brought to a hospital where, unrecognized, she was "dumped" as a charity case onto another hospital. Straus's account of Yalow's slow but ultimate triumph over...