小鼠颗粒酶M(GZMM)检测试剂盒在一步法测定中,当标本中受检抗原的含量很高时,过量抗原分别和固相抗体及酶标抗体结合,而不再形成"夹心复合物"。类同于沉淀反应中抗原过剩的后带现象,此时反应后显色的吸光值(位于抗原过剩带上)与标准曲线(位于抗体过剩带上)某一抗原浓度的吸光值相同,如按常法测读,所得结果将低于实际的含量,这种现象被称为钩状效应(hook effect),因为标准曲线到达高峰后呈钩状弯落。钩状效应严重时,小鼠颗粒酶M(GZMM)检测试剂盒反应甚至可不显色而出现假阴性结果。因此在使用一步法试剂测定标本中含量可异常增高的物质(例如血清中HBsAg、AFP和尿液hCG等)时,应注意可测范围的zui高值。用高亲和力的单克隆抗体制备此类试剂可削弱钩状效应。假使在被测分子的不同位点上含有多个相同的决定簇,例如HBsAg的a决定簇,也可用针对此决定的同一单抗分别包被固相和制备酶结合物。但在HBsAg的检测中应注意亚型问题,小鼠颗粒酶M(GZMM)检测试剂盒HBsAg有adr、adw、ayr、ayw4个亚型,虽然每种亚型均有相同的a决定簇的反应性,这也是用单抗作夹心法应注意的问题。

klA116Bo 牛调节激活正常T-细胞表达分泌因子(RANTES)ELISA试剂盒现货供应 ELISA Kit for Regulated On Activation In Normal T-xyll Expressed And Secreted (RANTES) Bos taurus; Bovine (Cattle)
klA004Bo 牛血管紧张素转化酶(Axy)ELISA试剂盒现货供应 ELISA Kit for Angiotensin I Converting Enzyme (Axy) Bos taurus; Bovine (Cattle)
klA119Bo 牛CD40配体(CD40L)ELISA试剂盒现货供应 ELISA Kit for Cluster Of Differentiation 40 Ligand (CD40L) Bos taurus; Bovine (Cattle)
klA546Bo 牛免疫球蛋白A(IgA)ELISA试剂盒现货供应 ELISA Kit for Immunoglobulin A (IgA) Bos taurus; Bovine (Cattle)
klA212Bo 牛基质金属蛋白酶23B(MMP23B)ELISA试剂盒现货供应 ELISA Kit for Matrix Metalloproteinase 23B (MMP23B) Bos taurus; Bovine (Cattle)
klA217Bo 牛α1-微球蛋白(α1M)ELISA试剂盒现货供应 ELISA Kit for Alpha-1-Microglobulin/Bikunin Precursor (a1M) Bos taurus; Bovine (Cattle)
klA120Bo 牛干细胞因子(SCF)ELISA试剂盒现货供应 ELISA Kit for Stem xyll Factor (SCF) Bos taurus; Bovine (Cattle)
klA124Bo 牛转化生长因子β1(TGFβ1)ELISA试剂盒现货供应 ELISA Kit for Transforming Growth Factor Beta 1 (TGFb1) Bos taurus; Bovine (Cattle)
klA124Cp 羊转化生长因子β1(TGFβ1)ELISA试剂盒现货供应 ELISA Kit for Transforming Growth Factor Beta 1 (TGFb1) Capra hircus; Caprine (Goat)
klA213Bo 牛髓细胞触发受体1(TREM1)ELISA试剂盒现货供应 ELISA Kit for Triggering Rexyptor Expressed On Myeloid xylls 1 (TREM1) Bos taurus; Bovine (Cattle)
klA006Bo 牛双调蛋白(AREG)ELISA试剂盒现货供应 ELISA Kit for Amphiregulin (AREG) Bos taurus; Bovine (Cattle)
klA051Bo 牛胰岛素样生长因子2(IGF2)ELISA试剂盒现货供应 ELISA Kit for Insulin Like Growth Factor 2 (IGF2) Bos taurus; Bovine (Cattle)
klA052Bo 牛胰岛素样生长因子结合蛋白1(IGFBP1)ELISA试剂盒现货供应 ELISA Kit for Insulin Like Growth Factor Binding Protein 1 (IGFBP1) Bos taurus; Bovine (Cattle)
klA126Bo 牛内皮细胞TEK酪氨酸激酶(Tie2)ELISA试剂盒现货供应 ELISA Kit for TEK Tyrosine Kinase, Endothelial (Tie2) Bos taurus; Bovine (Cattle)
klA128Bo 牛组织金属蛋白酶抑制因子2(TIMP2)ELISA试剂盒现货供应 ELISA Kit for Tissue Inhibitors Of Metalloproteinase 2 (TIMP2) Bos taurus; Bovine (Cattle)小鼠颗粒酶M(GZMM)检测试剂盒