black children have greater body density , higher blood pressure , and higher serum total cholesterol , alpha-lipoprotein cholesterol , and insulin levels , whereas white children have a higher percentage of body fat , a faster heart rate , and higher hemoglobin , serum triglyceride , pre-beta-lipoprotein cholesterol , plasma renin , and dopamine-beta-hydroxylase levels .
C0229671
serum
C0032105
plasma