Fig. 4From: Surgical resection of a retroperitoneal liposarcoma producing insulin-like growth factor II: a case reportWestern blot images showed that migrated bands were seen around 15Â kDa (big IGF-II) in the serum sample before operation and disappeared after operation (a). Immunohistochemistry showed cytoplasm of the tumor cells was stained by IGF-II (b)Back to article page