Table 1. Biochemical response to 1.2% Ca, 0.02% P diet.

		Serum Ca, mg%*		Serum P, mg%*		Bone ash,† %
Genotype	n	Initial	At death	Initial	At death
-/-	17	9.9 ± 0.8	9.1 ± 1.2	8.4 ± 1.4	2.0 ± 0.7	51.2 ± 0.6‡
+/-	23	9.5 ± 0.7	11.0 ± 1.2	7.9 ± 1.1	2.9 ± 0.7	53.9 ± 0.5
+/+	17	10.3 ± 0.6	10.4 ± 0.6	7.4 ± 0.9	2.7 ± 0.4	54.4 ± 0.6

^*Expressed as mean ± SD.

^†Expressed as mean ± SEM.

^‡Significance at P < 0.003 vs. +/-; P < 0.001 vs. +/+.