Fig. 4From: A case of insulin-like growth factor 2-producing gastrointestinal stromal tumor with severe hypoglycemiaWestern immunoblot analysis of serum and tumor insulin growth factor 2 (IGF2). Big IGF2 (11–18kDA) was detected only in the pre-operative serum and tumor samples. Acid-ethanol extracted serum samples and tumor sample were performed a Western immunoblotting using clone S1F2, Merck Millipore, Japan for primary antibodyBack to article page