月见草不同品系种子油的成份测定

月见草不同品系种子油的成份测定赵占英于翠兰张俊兰田洪（吉林省通化市园艺研究所１３４００１）月见草俗名山芝麻,夜兰香,属柳叶菜科一年生或二年生草本植物。月见草种子油中含有γ—亚麻酸,具有特别的生理活性,可以降低血液中的胆固醇,以γ—亚麻酸为主要成份生产...     

白细胞介素8在大鼠消炎痛性胃溃疡中的作用

白细胞介素８在大鼠消炎痛性胃溃疡中的作用＊张庆红梅琦朱运龙陈健康（第四军医大学生理学教研室西安７１００３２）白细胞介素８（ＩＬ－８）是一种多源性细胞因子,具有强烈的中性粒细胞趋化作用,与炎症性疾病有密切关系。在消炎痛诱发的胃溃疡病理过程中,可以观察到...     

真核细胞基因工程产物人生长激素的纯化研究

应用反相高效液相色谱法对真核细胞基因表达产的人生长激素进行了纯化研究,发现在７１．６７％的乙晴浓度下人生长激素可有效地与其它杂蛋白分离,乙晴与人生长激素的短时间接触不影响其放射免疫活性。     

The human apoE7 and apoE4 transgenic mice models

To scrutinize the disorders caused by human mutant apoE7/apoE4, human apoE4 and E7 transgenic mice were established with microinjection technique to examine molecular genetic phenomenain vivo. The integration and expression of h-apoE mutant genes in transgenic mice were determined with Southern blot, Northern blot and ELISA. The current studies indicated that the transgenes and the phenotypes regarding expression of transgenes could be transmitted stably in transgenic lines. The levels of serum lipid in transgenic mice showed the characteristics of hyperlipidemia. Besides, behavior tests demonstrated the degeneration of learning and memory in transgenic mice. Short life span was observed in 2 transgenic lines. After fed with high lipid food high serum lipid was found both in normal and transgenic mice, but their mechanism regulating lipid metabolism was different. It was also verified that the human apoE mutants located at either N-terminal or C-terminal had the same pathogenesis regarding disorders of lipid metabolism in murine.     

我初次教“达尔文主义基础”的前后

一、两年以前的情形在二年前的时候,就听说下学期要把“生物学”这门功课取消了,代替这门课程的是达尔文主义。当时的心情又高兴及恐惧。高兴的是:不必再重复初中动植物的课程,本来是不必要的,初中既然学过了,高中再教一次,在时间上是有些浪费。同学中也有一部分人常反映说:“我既不想学医,     

控灌对小麦植株体内激素含量与籽粒灌浆速率的影响

利用防雨棚研究了控灌对小麦植株体内激素含量与籽粒不乐速率的影响。结果表明：随控水加重,小麦旗叶、根系和籽粒中ＡＢＡ含量迅速达到高峰,然后快速降低;控水愈重,ｉ－ＰＡｓ峰值和籽粒灌浆速率峰值出现愈早,尔后下降,从而加速了植株衰老进程,导致产量降低。籽粒灌浆速率变化与旗叶,根主籽粒中激素含量变化呈极显著相关,且上述性状在相对含水量６０％处理下与８０％（对照）相比无显著差异,从而为小麦节水栽培提供了依据     

名花佳肴话木槿

木槿（Ｈｉｂｉｓｃｕｓｓｙｒｉａｃｕｓ）又名朝开暮落花、篱障花,为锦葵科木槿属植物。“风露飒已冷,天色亦黄昏。中庭有槿花,荣落同一晨。”这是唐朝著名诗人白居易咏木槿的诗句。可见木槿早已为我国人民所喜爱。木槿原产东亚,分布在我国黄河流域及朝鲜、日本等地,现?..     

Identification and characterization of inward K+ -channels in plasma membranes of Arabidopsis root cortex cells

Patch clamping whole-cell reeording techniques were apphed to study the inward K~ channels in Arabidopsis root cortex cells. The inward K~ -channels in the plasma membranes of the root cortex cell protoplasts were activated by hyperpolarized membrane potentials. The channels were highly selective tor K~ ions over Na~ ions. The channel activity was significantly inbibited by the external TEA(?) or Ba(?) The changes in cytoplasmic Ca~(2 ) concentrations did not affect the whole-cell inward K~ -currents. The possible asso(?)ation betw(?)en the channel selectivity to K~ and Na(?) ions and plant salt-tolerance was also discussed.