Purity：Purified by ion exchange chromatography following ammonium sulfate precipitation.
Form：Supplied as a liquid in PBS, pH 7.2, 0.09% sodium azide and a stabilizer. Labeled with Allophycocyanin (APC).
Specificity：Recognizes the 44kD antigen found on a sub-population of T-cells and activated B cells. These CD28+ CD8 cells are now known to be cytotoxic T-cell precursors. Will induce the proliferation of resting T lymphocytes. Does not react with B cells, granulocytes or monocytes. Does not crossreact with canine.
