NMR Studies on the Subacute Biochemical Effects of Aristolochic Acid on Rat Serum

The subacute effect of aristolochic acid （AA） on rat serum was studied by NMR method. The biochemical effects induced by AA were characterized by an increase in the amounts of creatinine, trimethylamine N-oxide, acetoacetate, acetate and 3-D-hydroxybutyrate and lactate in serum from ^1H NMR spectra. Principal component analysis was used for further comparing the similarities of ^1H NMR spectral profiles of serum from rats treated with AA and model toxins.     

研究者利用培养细胞培育成功新的老鼠心脏

利用培养细胞培育复杂器官是相当困难的,目前只限于膀胱等较为简单的器官。现在,美国明尼阿波利斯（Minneapolis）市明尼苏达大学的泰勒（Doris Taylor）已获得惊人突破。他们取出老鼠的心脏,以化学方法在相关器官之间搭建的“脚手架”只触发免疫反应,并维持心脏的基本形状。     

“食人岛”之谜

正五、怪异的铁匣子托尼,快醒醒,我怎么听到房间里有浪涛声!睡梦中杰克突然被摇醒,他睁开惺忪的双眼,猛地看见烛光下菲尔德脸色煞白两眼发直,腮边的肌肉不停抽搐。杰克不禁毛发倒竖,一股寒气自脚底蹿上脑门。他一骨碌从床上滚下来。那声音是从墙角传来的,他们感觉房间仿佛在大海中飘     

A Quantitative Analysis of Modulation of the Fast Excitatory Postsynaptic Potential of Neurons in Rat Sympathetic Ganglia by a Low-Intensity Laser

We propose a mathematical model which can quantitatively describe the kinetics of postsynaptic membrane potential modulated by a low intensity laser. By virtue of the numerical computation, it is found that the height of peak of fast excitatory postsynaptic potential （f-EPSP） for intermediate laser power density （around 2mW/cm^2） is higher than that for both small and large laser power densities, that is, of the f-EPSP peak height changes with the increasing laser power density （up to 5 m W/cm^2） in non-monotonic behaviour. The theoretical results are qualitatively consistent with the previous experimental data.     

富翁钢琴鼠

一幢绿色花园别墅,一圈白色的围墙,围墙脚有个被丁香丛遮掩的洞,洞里住着老鼠一家九口。