四氢香叶醇，106-21-8，≥98%，阿拉丁

【共享】流式 Overview of Flow Cytometry

subpopulation of cells representing 15% of total cells. At a flow rate of 3000 cells/sec, ∼6-8 × 106 selected cells (with ∼98.5% purity) may be recovered after 5 to 8 hr of sorting. While this recovery and purity will be adequate for a variety of purposes

Supported Membrane Formation, Characterization, Functionalization, and Patterning for Application in Biological Science and Technology

; see for selection] Deionized water (resistivity ≥18 MΩ and apparent pH 5.5) Argon 25‐ to 50‐ml glass round‐bottomed flask (cleaned by piranha or base etching; see protocol

甜菜碱及其应用

体内各种物质代谢不可缺少的重要物质，动物本身几乎不能合成甲基，必须由饲料供给。甜菜碱是最有效的甲基供体，它的三个甲基基团都可作为有效的活性甲基。其中一个使高半胱氨酸甲基化，形成内源蛋氨酸和二甲基苷氨酸，内源蛋氨酸通过形成Ｓ－腺苷蛋氨酸释放甲基，二甲基甘氨酸通过释放甲基形成５－甲基四氢叶酸，而５－甲基四氢叶酸又是高半胱氨酸合成蛋氨酸的甲基供体。甜菜碱就是通过甜菜碱－高半胱氨酸甲基转移反应，参与蛋白质、脂肪等物质的代谢，在神经系统、免疫系统、泌尿系统和心血管系统中起重要作用。 　　甜菜碱与胆碱、蛋氨酸的关系