Sema3b 深入了解基因-突变-疾病-模型全维度数据，尽在Rare Disease Data Center（RDDC）综合数据库

MGI:107561 Mice homozygous for one knock-out allele are viable and fertile with no obvious pathological abnormalities. Mice homozygous for a second knock-out allele exhibit improper positioning of a major brain commissural projection, the anterior commissure.