Phenotype Allele Zygosity Sex Life Stage Procedure Parameter Phenotyping Center Source P Value Data decreased heart weight Acta2 homozygote male Early adult Organ Weight Heart weight MRC Harwell IMPC 4.23E-5 //www.mousephenotype.org/data/charts?accession=MGI:87909&allele_accession_id=MGI:6402026&zygosity=homozygote¶meter_stable_id=IMPC_HWT_008_001&pipeline_stable_id=HRWL_001&procedure_stable_id=HRWL_OWT_001¶meter_stable_id=IMPC_HWT_008_001&phenotyping_center=MRC Harwell