HCDR3 length distribution in the third trimester of human fetal gestation.

Shown are mean HCDR3 lengths in VDJC_μ transcripts from 138 preterm and term infants ranging in age from 23 to 40 weeks' gestation. The race and sex of the donor are noted for each sample. The solid line represents the best linear fit, and the dashed lines denote 5% and 95% confidence limits for the means of the distribution of lengths over time.