|Dataset||MPO Gene-Phenotype Associations|
|Category||disease or phenotype associations|
|Description||increase in the weight of the group of four muscles (rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis) which extend down the front of the thigh and are the major extensors of the knee joint (Mammalian Phenotype Ontology, MP_0010226)|
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6 gene mutations causing the increased quadriceps weight phenotype in transgenic mice from the MPO Gene-Phenotype Associations dataset.