[en] By means of autoradiographic and radioactivity counting methods, it is shown that ³H-Dau retained in rat liver is significantly higher (tens to hundreds times) and longer by route of intra portal injection of ³H-Dau-HAMS than by intraperitoneal injection of ³H-Dau, and there are morphological changes of necrosis induced by microsphere embolization and subsequent regeneration. The results indicate that chemotherapeutic microspheres might play a dual role of embolization and therapeutic enhancement effects

[en] Short communications only

[en] Objective: To investigate the solubility characteristics of uranium oxide with different particle sizes, which was collected at site scene, in simulated lung fluid and other correlative buffer systems. Methods: Uranium oxide particles were classified with a cascade impactor. The percentage of cumulative soluble uranium with different particle sizes in simulated lung fluid and buffer solutions at different times were observed. Results: Uranium oxides with smaller particle sizes had better solubility in simulated lung fluid and the solubility became higher with increasing of time. The solubility of uranium oxide also became faster along with the increasing of acidity of HAc-NaAc buffer and increasing of alkalinity of NH₄OH-NH₄Cl buffer systems. Uranium oxide was soluble in Na₂CO₃ solution and basically insoluble in NaH₂PO₄-Na₂HPO₄ solution. Conclusions: Uranium oxides with smaller particle sizes have better solubility than bigger ones in simulated lung fluid. Uranium oxide is soluble in acidic HAc-NaAc, alkaline NH₄OH-NH₄Cl buffer systems and Na₂CO₃ solution, but insoluble in NaH₂PO₄-Na₂HPO₄ solution

[en] The effect of OK-432 a preparation of streptococcus haemolyticus, on accelerating the recovery of T lymphocyte function in mice after γ-irradiation has been studied. The result indicates that OK-432 has effects on several subpopulations of T lymphocytes. It can promote the recovery of mixed lymphocyte reaction (MLR) and delayed type hypersensitivity to allotype splenocytes in irradiated mice, increase the production of IL-2 by T_H lymphocytes and the proliferation response of splenocytes to non-specific mitogen Con A