The Adeno-X Rapid Titer Kit takes advantage of production of viral hexon proteins for the titration of adenoviral stocks in 48 hours. A viral stock is tested by making serial dilutions, infecting HEK 293 cells, and 48 hours later, fixing and staining those cells with the Mouse Anti-Hexon Antibody. The signal is detected with a Rat Anti-Mouse Antibody conjugated to horseradish peroxidase (HRP) and developed with metal-enhanced 3,3'- Diaminobenzidine tetrahydrochloride (DAB). 120 Titrations