一段4.2千碱基的基因组片段,包含exon 1,通过同源重组被替换了neo标记的选择性 cassette。对大脑匀浆的 Western blot 检测显示,纯合突变小鼠中没有蛋白质表达(来源:J:77284)
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A 4.2 kb genomic fragment containing exon 1 was replaced with a neomycin selection cassette inserted by homologous recombination. Western blot analysis of brain homogenates indicated an absence of protein in homozygous mutant mice. (J:77284)