INS and hyperinsulinism: Similarly, on WD C57BL/6JBomTac showed more pronounced fasting insulin levels compared to C57BL/6JRj and C57BL/6J, suggesting that C57BL/6JBomTac may be more susceptible to DIO induced hyperinsulinemia compared to mice from the other two vendors, however since the number of animals is relatively low this needs to be verified by additional studies.