Streck announces the availability of the 2.0 mL Cyto-Chex BCT, a direct-draw blood collection tube used for the preservation of whole blood samples for immunophenotyping by flow cytometry. The preservative contained in Cyto-Chex BCT maintains the integrity of the white blood cell cluster of differentiation (CD) markers for up to seven days at room temperature, allowing for convenient transport and storage. The 2.0 mL drawtube is packaged in sixand 100-tube configurations. Cyto-Chex BCT is also offered in a standard 5.0 mL drawtube, packaged in 6-, 25and 100-tube sets.