According to {HEAD ~ the methods}, an unrearranged human immunoglobulin heavy chain transgene is introduced into {TAIL ~ the germline} of a non human animal to produce a transgenic non human animal having the transgene in its somatic and germ cells 
According to { HEAD ~ the methods } , an unrearranged human immunoglobulin heavy chain transgene is introduced into { TAIL ~ the germline } of a non human animal to produce a transgenic non human animal having the transgene in its somatic and germ cells
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