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A, Representative Western blots of VEGF in normal human pituitary and pituitary adenomas (non functional pituitary adenomas (NFPA), PRL- and GH-secreting pituitary adenomas. Blots were reprobed with anti- GAPDH antibody to ensure equal loading; B, Ratio of VEGF vs. GAPDH was determined by densitometry (Student's t test was performed to determine the significance). *P<0.05, as compared with normal pituitary group.
