Licensing certain technologies from privately held Genospectra, Sigma-Aldrich has further expanded its presence in the RNAi and cell-based assay fields.

As part of the alliance announced last week, the companies said they plan to develop new technology and products in the area of cell-based assays, and in particular aim to develop live-cell biosensor assay reagents that can provide real-time data on the location and activity of proteins in living cells.