题目内容
Griffith's experiment, conducted in ________ by Frederick Griffith (1879-1941) who was a British medical officer, was one of the first experiments suggesting that bacteria are capable of transferring genetic information through a process known as transformation.
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GeneticengineeringwasfirstpresentedattheSixthInternationalCongressofGeneticsheldin _______.
The exact nature of the transforming principle (DNA) was verified in the experiments done by Avery, McLeod, and McCarty in ______ and by Hershey and Chase in 1952.
The medical geneticist Clyde E. Keeler (1900-1994) in _______ was probably the first to use the term 'gene therapy', although the process he was describing (the correction of gene-based deviations in plants and animals) was not envisaged as an effective therapeutic technique to treat genetic diseases in man.
The first deliberate transfer of foreign genes into human recipients with a therapeutic purpose, was performed in ______ by the American physician Stanfield Rogers who attempted to treat three German siblings presenting with arginase deficiency, by giving them injections of the native Shope rabbit papilloma virus, but he failed.
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