Protein expression and purification Mammalian cells HeLa

Get tips on using Rat GE 4x44K v3 Microarray Kit to perform Microarray Gene expression arrays - Rat cholangio carcinoma cyanine 3 & cyanine 5

Get tips on using Human Genome CGH Microarray Kit, 4x44K to perform Microarray Gene expression arrays - A-375 human melanoma Digoxigenin-11-dUTP

Get tips on using GeneChip® Human Genome U133 Plus 2.0 Array to perform Microarray Gene expression arrays - Rhesus monkey brain tissue Biotin

Get tips on using SurePrint G3 Mouse Exon 4x180K Microarray Kit (165,984 Exon probes) to perform Microarray Gene expression arrays - Mouse Cyanine-CTP

Get tips on using CelLytic™ M to perform Protein isolation Bacteria - Staphylococcus aureus

Get tips on using TaqMan™ Fast Universal PCR Master Mix (2X), no AmpErase™ UNG to perform PCR Multiplex PCR - Mammalian DNA

ELISA is the most commonly used method of detecting and quantifying the concentration of an antigen in an unknown sample. During the experiment, If you get a weak signal, then make sure reagents are at room temperature before starting the assay. Try increasing incubation times to ensure maximal antibody binding and amplify the signal. Secondly, if you get values above 0 in the negative control indicates a high background signal. Try to consider reducing your antibody concentration and prevent non-specific binding of antibodies by using affinity-purified antibody and suitable blocking buffers. To avoid high well to well variation, do not stack plates during incubation, no bubbles in the plate and wash wells thoroughly to avoid variation.