PTH and thyroid cancer, nonmedullary, 2: However, there are also important differences between TCAL and the Galnt3-deficient mice (Table 3) and these include: an absence of growth retardation in TCAL mice; elevated plasma 1,25-dihydroxyvitamin D concentrations in TCAL mice (Fig. 5F); normal plasma concentrations of calcium and PTH in TCAL mice; increased areal BMD in female TCAL mice; and ectopic calcification (Figs. 2A & 2B) in TCAL mice, which is a hallmark of FTC in man [4], but was notably absent in Galnt3-deficient adult mice, even when aged to 1 year [31].