“Bioprobes 56,” the June 2008 issue of a newsletter published by !%Invitrogen Corp.%!, features an article on the Alex Fluor 488 dye as well as articles on new technologies such as Cellular Lights fluorescent reagents, MitoProfile dipstick and microplate assays, and Click-iT AHA (L-azidohomoalanine) for nascent protein synthesis. The 32-page publication discusses the CellMask stains for fluorescence-based imaging, IgG antibody labeling kits for imaging and flow cytometry, the alamarBlue reagent for cell viability and cell proliferation, and the ThiolTracker violet glutathione detection reagent.