The complexity of assay range from relatively simple membrane assays. This assay is one of the fastest assays performed on proteins. These tests include cell cultures, PCR, ELISA antigen assays, plaque neutralization assays, and immunofluorescence essays. Biotin is widely used throughout the biotechnology industry to conjugate proteins for biochemical assays. Chestnut extracts were evaluated through several biochemical assays showing evident antioxidant properties. There are several variations of protein-based virus quantification assays. Specific quantitative assays were even developed for its detection. Rapid diagnostic assays performed on respiratory specimens are available commercially. Lateral flow tests operate on the same principles as the enzyme-linked immunosorbent assays (ELISA). CV measures are often used as quality controls for quantitative laboratory assays. Adult worm antigens can be detected by indirect haemagglutination assays (IHAs). Enhanced chemiluminescence is a common technique for a variety of detection assays in biology. Below are specific examples of widely used protein-based assays. PubChem is a database of chemical molecules and their activities against biological assays. Correlation of viability as measured by trypan blue assays were 0.97.