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She earned a degree in Medical Microbiology , and continued into the Ph.D. program there , focusing on Salmonella plasmids , eventually having one named after her , pKM101 ; that plasmid is a key component in the Ames test ( named for Bruce Ames ) .
 person: Ames; person: Bruce Ames
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Ames, Bruce Ames 
Answer:
 person: Ames; person: Bruce Ames