244193-59-7;≥99%;1-dodecyl-3-m

Two Efficient Methods for the Conjugation of Smooth-Form Lipopolysaccharides with Probes Bearing Hydrazine or Amino Groups. II. LPS Activation with a

-4-dimethylaminopyridinium tetrafluoroborate (CDAP). The method yields conjugates with good labeling ratios, preserving the endotoxic activity of the lipid A moiety. Conjugation of smooth-form LPS from Salmonella enterica sv. Minnesota with dansyl hydrazine and horseradish

率的抽样误差和总体率的估计

根据样本率来推算总体率所在的范围，根据样本含量n和样本率P的大小不同，分别采用下列两种方法： 　　（一）正态近似法 　　当样本含量n足够大，且样本率P和（1-p）均不太小，如np或n(1-p)均≥5时，样本率的分布近似正态分布，则总体率的可信区间可由下列公式估计： 　　总体率（π）的95%可信区间：p±1.96sp 　　总体率（π）的99%可信区间：p±2.58sp 　　例如前述两组高碘地方性甲状腺肿患病率的总体患病率可信区间为：

Two‐Step, One‐Pot Synthesis of Inosine, Guanosine, and 2′‐Deoxyguanosine O6‐Ethers via Intermediate O6‐(Benzotriazol‐1‐yl) Derivatives

Basic Protocol 1:   Materials Inosine ( S.1 ), 99% (Acros)