Since Ms. Kean found a new way to use an existing resource , people have not use rat in that way because their research method differs and Ms. Kean want a unique result.
Animal rights activists should not express concerns about training rats because animals as been using for experiments since time memorial.
Research  serves as the  creation of new knowledge  which involves the  use of existing knowledge in a new as well as  creative way .
Research helps in  generation of  new concepts as well as  methodologies and understandings, hence Since Ms. Kean found a new way to use an existing resource , people have not use rat in that way because their research method differs and Ms. Kean want a unique result.
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