Introduction：

WZ Biosciences has predesigned siRNA sequences against over 27,000 human genes. 4 siRNAs are designed for each gene and cloned into pAV-U6-GFP vector with the stem-loop structure "Sense-loop (TTCAAGAGA)-Antisense". We guarantee at least 70% knockdown of the target gene with our designed shRNA vectors. WZ Biosciences also offer custom shRNA cloning and gene kockdown validation services. For more information please contact us. For hard-to-transfect cells, or in vivo animal study, we recommend viral delivery (Adenoviurs, Lentivirus or AAV).