The heterozygous disproportionate micromelia (dmm) mouse: morphological changes in fetal cartilage precede postnatal dwarfism and compared with lethal homozygotes can explain the mild phenotype

杂合子不成比例短肢症（dmm）小鼠：胎儿软骨的形态变化先于出生后侏儒症，与致死性纯合子相比，这可以解释其轻微的表型