| Type | MGI:General | Description | sporadic deaths are first seen in heterozygotes during weaning period, between P21 and P27; often, mice are found dead with hindlimbs outstretched and front paws tucked under the chin many mice die during third postnatal week and 40% die by 15th week; this is more than on a coisogenic 129 background but less than on a mixed background |
