ALAMOGORDO, N.M. – During Lennie?s life under the microscope, science changed.
….Researchers say advances in laboratory techniques mean that knowledge once gained only by examining a live animal now can be learned in a petri dish. And an expanding body of evidence shows that chimps don’t work as the human fill-in that researchers once hoped they would.
The ethics of animal research also have evolved. What once was commonplace is now controversial, and there’s a growing feeling that chimps should be spared the physical and mental pain of research.