Fig. 2: LUS-UT, CL, and aCS with gestational age.
From: The biomechanical evolution of the uterus and cervix and fetal growth in human pregnancy

a Lower uterine segment thickness (LUS-UT), b cervical length (CL), and c aspirated cervical stiffness (aCS) with gestational age for all participants. The dotted line marks the overall slope, and participants are color-coded by parity (blue = nulliparous, orange = parous).