| Type | MGI:General | Description | incubation period following infection with sporadic Creutzfeldt-Jakob MM1 prions is 542 and 648 days for 2 mice compared to 467+/-24 days for Prnptm2(PRNP*129M)Tkit homozygotes incubation period following infection with sporadic Creutzfeldt-Jakob VV2 prions is 312+/-7 days |