GPT and hyperlipidemia: In this study, we investigated then checked the major hyperlipidemia-related phenotypes of four Chr 1 substitution lines, including B6/JGpt-Chr1SJ(jhxiao)/Gpt (B6-Chr1SJ), B6/JGpt-Chr1LY(jhxiao)/Gpt (B6-Chr1LY), B6/JGpt-Chr1ZZ2(jhxiao)/Gpt (B6-Chr1ZZ2) and B6/JGpt-Chr1BLD(jhxiao)/Gpt (B6-Chr1BLD).