Help to implant a human embryo; watch mouse eggs divide after fertilization; interview women about their experiences with emergency contraception; collect sperm from finches in the Galapagos Islands off Ecuador: specialists in reproductive biology undertake these duties and many more. The field provides a surfeit of career trajectories and research questions. "We cover everything from fertilization to death," says Dolores Lamb, director of the Center for Reproductive Medicine at Baylor College of Medicine in Houston, Texas.
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