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

Fig. 3.

Fig. 3

Expression analysis of IGFBP-1 and IGF-1 in NPC by immunohistochemistry. NPC slides were process for immunohistochemistry of IGFBP-1 and IGF-1 and the following observations were made: a-g. (×200). a Negative stain of IGFBP-1 in NPC tissues. b Low expression level of IGFBP-1 in adjacent non-tumourous tissue. c High expression level of IGFBP-1 in NPC tissues. d Negative stain of IGF-1 in NPC tissues. e Low expression of IGF-1 in NPC tissues. f High expression of IGF-1 in adjacent non-tumourous tissue. Bar, 50 μm