Fifteenth of Cronobacter sakazakii were obtained from previous studies isolates (infant formula, spinal fluid and bloods). The newborn mice number was 15 obtaining healthy the Iraqi Center for Cancer Medical Genetics whose ages ranged between 10-17 days their weights 8.5 ± 1.25 gm, divided into 3 groups. samples cut placed in formalin, then stabilizer concentrations alcohol (70%, 80%, 90%,100%)...