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. 2017 Jan 31;17:90. doi: 10.1186/s12885-017-3068-0

Fig. 4.

Fig. 4

Comparison of serum levels of IGFBP-1, IGF-1 and r IGFBP-1/IGF-1 in NPC and control groups. Serum levels were quantified from NPC and control patients of a serum IGFBP-1 level, b serum IGF-1 level and c Ratio of serum IGFBP-1 to IGF-1