色素形成

Within 6 h, a 1-pyridoxamino-propenal adduct derived from reaction of equimolar PM+MDA was detected.

PM也抑制了MDA修饰的BSA中老年色素类荧光物质的形成。

As the growth of our age, the pigment cell that sending bursa root department can stop to make melanin, white hair is formed accordingly.

随着我们年龄的增长，在发囊根部的色素细胞会停止制造黑色素，白发便因此形成。

Benzene undergoes metabolic oxidation by cytochrome P450 enzymes to form an electrophilic epoxide which can alkylate protein and DNA.

苯在细胞色素P450酶氧化代谢下，形成一种能烷化蛋白质和DNA的电环氧化物。

A new upland germplasm with the delayed gland morphogenesis trait of G.bickii, ABH-0318, was bred by crossing the amphidiploid of (G.arboreum ×G.bickii)F_1 with an upland cotton germplasm 'Gl_2Gl_2gl_3gl_3' and backcrossing afterward continuously.

用F1双二倍体作母本与陆地棉单节显性系1(Gl2Gl2gl3gl3)进行杂交和连续回交，育成了具有子叶色素腺体延缓形成特性的陆地棉种质系———ABH0318。

Arterialization of the outflow venous system may induce this condition, and result in impairment of arteriovenous access function, disabling upper extremity edema, violaceous discoloration and hyperpigmentation, ulceration of the skin, and in advanced cases, gangrene formation of the fingers and neuralgia.

原因可由前臂与手掌回流静脉产生动脉化而造成，同时动静脉管失去透析功能，上肢肿胀呈蓝紫色或色素沈著的变化，有时会形成皮肤溃疡，在严重的病例甚至会造成手指坏疽变化与神经痛。

The content of chromoplast pigments and the neutrality volatile aroma of flue-cured tobacco of Yunnan Dali and Zimbabwe was clearly more than other producing area. The content of carotenoid and its degrading products in the Yunnan flue-cured tobacco was clearly more than that of the others.

其中云南大理和津巴布韦烤烟中质体色素及其降解形成的中性香气物质含量明显高于其他产区，云南烤烟中类胡萝卜素和其降解形成的香气物含量明显高于其他烤烟。

It is well known that retinal pigment epithelial cells are predominant proliferative cells in PVR which is an excessively wound healing response occurring after RPE cell wounding. The activated RPE cells migrate from their normal, sessile state to vitreous and onto both surfaces of the retina, in which they begin to dedifferentiate, migrate, proliferate, change phenotype and secrete ECM.

既往研究证明视网膜色素上皮(retinal pigmentepithelial，RPE)细胞是参与PVR的主要细胞，PVR是视网膜脱离后RPE细胞损伤的一种自我修复过程，是一种过度的眼内创伤修复反应；RPE细胞在正常位置上处于静止状态，而在某些病理条件下，如视网膜裂孔形成和视网膜脱离后，RPE细胞脱离原位，开始去分化、移行、增生、发生表型转化并分泌胶原等ECM，最终在视网膜前后表面和玻璃体内形成具有收缩能力的增生膜，造成牵拉性视网膜脱离。

The cilia of retinal pig merit epithelium disappeared completely by TEM, the granola of retinal pigment epithelium decreased, the rough endoplasmic retinal, the mitochondrial crista breaks, the outer nuclear layer arrangemen disorderin, disc broad, the vacuole timer and outer plexi-form layer shaped, the ganglion cells and membranous of eye cell outer side got think, intermembranous space gotorgancelle disappeared mostly, the crista of cytoplasm ganglion cells layer swelled.

透射电说可见：视网膜色素上皮细胞表面纤毛完全消失，视网膜色素上皮细胞内颗粒减少，粗而内质网、线粒体嵴断裂，外颗粒层细胞排列紊乱，视细胞外段盘膜粗大，盘膜间隙增宽，内外丛状层空泡形成，神经节细胞、细胞器大部分消失，神经节细胞层可见细胞质有嵴性肿胀。

A modified method bibed on the classical target factor analysis,refeed to as calibration working mains-TFA,waS used to perform a simultaneous determination-of a single or several mixture samples of food pigment s by confirming a corresponding calibration working matrix.

采用由目标因子分析法改进形成的校准工作矩阵法，对多组分食用合成色素混合体系进行同时测定。该法通过确认一个相应的校准工作矩阵即可对单个或多个混合样品的各组分进行同时直接测定。对七种三组分食用色素样品（各组分浓度在4.32～21.00μg／ml）的分析，各组分的回收率在97.93％～104.80％之间。与传统的目标因子分析法比较，此法特别适用于定性组成及定量范围基本清楚的混合样品的例行分析

Upon induction of apoptosis by diverse stimuli, Bax undergoes a conformational change and translocates to mitochondria, where it oligomerizes and forms pores that allow the release of cytochrome c and other cytotoxic foctors.

在被不同刺激诱导后，Bax的构象发生改变并转移到线粒体上。在线粒体膜上，它形成低聚物并使线粒体膜形成孔，使细胞色素c和其它细胞毒性因子可以排出。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。