PCNA and fetal growth restriction: The expression of transcription factor TBX2 (0.3-fold ± 0.9, p = 0.016; Figure 1F), ataxia kinase ATM (0.7 ± 1.26, p = 0.02; Figure 1G), cyclin B CCNB-1 (0.3-fold ± 1.7, p = 0.028; Figure 1B), and DNA repair gene PCNA (0.2-fold ± 0.9, p = 0.046; Figure 1C) were significantly decreased in this IUGR, when compared with controls.