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

Abstract excerpt

The disproportionate micromelia (Dmm) mouse has a mutation in the C-propeptide coding region of the Col2a1 gene that causes lethal dwarfism when homozygous (Dmm/Dmm) but causes only mild dwarfism observable approximately 1-week postpartum when heterozygous (Dmm/+). The purpose of this study was 2-fold: first, to analyze and quantify morphological changes that precede the expression of mild dwarfism in Dmm/+...

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