Whole-Blood-Staining Device

A whole-blood-staining device provides a means of (1) staining white blood cells by use of monoclonal antibodies conjugated to various fluorochromes, followed by (2) lysing and fixing of the cells by use of a commercial reagent that has been diluted according to NASA safety standards. More stable than whole blood, the lysed/fixed cells can be refrigerated at a temperature of 4 °C for as long as 72 h before processing and analysis on a flow cytometer.