Mice were dry-distilled at 800°C for 10 min, after [32P] orthophosphate or L- [4, 5 -3H] leucine was intraperitoneally administered. Phosphorus-32 was quantitatively recovered in the residual solid, whereas 95% of3H was found in the distillate (condensed water) . When14C (L- [U-14C] malic acid or L- [U-14C] leucine) was administered to mice and they were dry-distilled, 14C-radioactivity was distributed into two fractions; residual solid and exhaust gas. In these cases, the recovery percentage of14C in residual solid was not very high but increased as the treating temperature decreased. It reached about 40% of the administered14C at 400°C for 120min. By the drydistillation of animals, their weight was reduced to about 10% in every animal tested (mice, rats and rabbits) . The volume was reduced to about 20% in cases of mice and rats, and about 30% in case of rabbits. It was concluded that the drydistillation can be useful as a pre-treatment for disposal of animal wastes containing radioisotopes.
Solidification of soft organisms at room temperature was achieved by γ-ray-induced polymerization of a hydrophilic liquid monomer exchanged with the inner water. Typical recipes are given for an egg of 2.5 cm in diameter and for a bulb of a plant. This technique would be applicable to preparation of the large permanent sections of biological specimens.
To evaluate the system performance, several preoperational fundamental tests of single photon emission computed tomography (SPECT) were carried out. Spatial resolutions (FWHM) measured with the point-spread functions of a99mTc line source were 12.5 mm with a high resolution (HR) collimator and 17.2 mm with a high sensitivity (HS) collimator respectively. Slice thicknesses (FWHM) obtained from the profile curves of slice images were 17.5 mm (HR) and 29.0 mm (HS) at the center of rotation. System sensitivities were 5.4 kcps/slice (HR) and 27.8 kcps/slice (HS) . Uniformities calculated from the SPECT images of a pool phantom were 4.7% (HR) and 2.7% (HS) at the condition of 3000 kcounts to be acquired. SPECT images of the HEADTOME SET-031 were considered very useful to diagnose the cerebrovascular disease.
This study focussed on elucidating difference of blood PTH levels, by employing the various kinds of PTH kits. We carried out the measurements of PTH levels in sera of the hemodialysis patients with renal insufficiency presumably inac-tivated PTH degradative regulation in kidney. Our results showed the remarkable significant relationships among blood PTH levels of carboxyl and mid-region PTH and intact PTH in hemodialysis patients and was deduced that the differenee of PTH levels by using various kinds of PTH kits was responsible of PTH cleavage effect in the kidney.