premature and term neonates had levels that did not differ significantly from each other ( 0.22 and 0.14 iu/ml , respectively ) , but that were far lower than serum igd concentrations in normal children one to 20 years of age ( p = less than 10-9 ) , indicating that mature levels of igd are achieved sometime during the first year of life .
C0021289
neonates
C0008059
children