Table 2. δ²H and δ¹⁸O values of muscle tissue extracted from rats grown on three different waters.

Hydrogen Isotope Data, ‰*			Oxygen Isotope Data, ‰ **
Drinking water	Body water	Muscle tissue water	Drinking water	Body water	Muscle tissue water
+348	+241	+212	+15.5	+6.2	+7.0
+348	+250	+234	+15.5	+7.2	+7.6
+348	+240	+197	+15.5	+5.8	+5.8
+348	+247	+208	average	+6.4	+6.8
+348	+250	+207	−16.0	−9.6	−7.5
average	+245.6	+211.6	−16.0	−9.5	−7.1
−120	−83	−77	−16.0	−9.1	−6.8
−120	−86	−79	−16.0	−9.4	−6.8
average	−84.5	−78	average	−9.4	−7.05

These data are compared with the values obtained from whole body water.

^*Measurement precision for H isotopes  = 2‰.

^**Measurement precision for O isotopes  = 0.3‰.