Figure 4. Measured dimensions of decalcified longitudinal sections of mouse mandibular first molar teeth of GH-receptor-knockout 129OLA/BalbC mice with genotype groups: wild-type (Wt), heterozygous (Het) mice, and dwarf homozygous (GH-Receptor-KO). (A) Dentino-enamel junction length and mesio-distal crown width. (B) Mesial and distal dentin root lengths and their corresponding (Mesial Width, Distal Width) thicknesses. (C) Cross-sectional areas of coronal (Crown), (Mesial Root), (Distal Root) dentin and their summation (Sum Total) for individual mouse teeth. All mice were 45 days of age. All data: Wt, n = 8; Het, n = 9; GH-Receptor-KO, n = 7, except (B) Mesial Length (Wt, n = 8; Het, n = 8; GH-Receptor-KO, n = 7), (C) Mesial Root (Wt, n = 8; Het, n = 8; GH-Receptor-KO, n = 7), and (C) Sum Total (Wt, n = 7; Het, n = 8; GH-Receptor-KO, n = 6). All dimensions are presented as means ± SEM. ***P < 0.001; One-way ANOVA.