Fig. 2From: Higher IGFBP-1 to IGF-1 serum ratio predicts unfavourable survival in patients with nasopharyngeal carcinomaExpression of IGFBP-1 and IGF-1 in NPC and immortalized nasopharyngeal epithelial cell lines. RNA or protein was harvested from NPC and immortalized nasopharyngeal epithelial cell lines and characterized for mRNA expression of a IGFBP-1 and b IGF-1, and protein expression of IGFBP-1 and IGF-1 in culture medium c or cells d Back to article page