PROGRESS OF THE RESEARCH ON TRANSGENIC TECHNOLOGY OF ANIMAL
feng dengzhen(animal science department of agricultural shool; ningxia university; yongning; ningxia; 750105)chen zeming(animal breed station of alashan zuoqi; inner mongolia. bayanhaote 750300) feng meixiu(grassland management station of alashan zuoqi; inner mongolia; bayanhaote; 750300)
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