IL2 and neoplasm: To examine if the initial canine B-cell line CLBL-1 as well as the Rag2−/−γc−/− mouse tumor-derived canine CLBL-1M cell line show as well a higher proliferation rate in response to DSP30 and/or IL-2 stimulation in different concentrations in comparison to the corresponding unstimulated cells the cell proliferative activity of the two cell lines was measured post stimulation with a standard BrdU proliferation test (Cell Proliferation ELISA BrdU (colorimetric), Roche).