IL-4 protein has been tested by SDS-PAGE and is suitable as a control for polyclonal or monoclonal anti-IL-4 in immunological assays.
SDS-PAGE shows bands corresponding to IL-4 (1µg) in lane 1 (reduced) and lane 3 (non-reduced, arrowhead). Molecular weight estimation was made by comparison to prestained MW markers, lane 2.
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