aCells were washed in PBS 3 times 10 min each and rinsed once in 2× SSC before hybridization. Hybridization was carried out using a Texas Red conjugated 24-mer DNA oligodeoxynucleotide probe (5′-cagatgagccgaatcaaccctggc-3′) complementary to 7SK RNA in a moist chamber at 42°C for 12...
硫酸铅,又名石灰浆,可用于铅蓄电池、纤维增重剂、涂料分析试剂.工业上通常用自然界分布最广的方铅矿(主要成分为PbS)生产硫酸铅.工艺流程如图1:已知:①Ksp(PbSO4)=1.08×10-8
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TIMES STAFF WRITER NEW YORK —Robert MacNeil confirmed Monday that he will retire as co-anchor of PBS’ “MacNeil/Lehrer NewsHour” next year and said his decision was influenced by funding difficulties in public television. MacNeil, 63, told “NewsHour” staffers that he intends to leave in...
硫酸铅可用于铅蓄电池、纤维增重剂、涂料分析试剂.工业上通常用自然界分布最广的方铅矿(主要成分为PbS)生产硫酸铅.工艺流程如下:已知:①Ksp(PbSO4)=1.08×10-8,Ksp(PbCl2)=1.6&