Representative immunohistochemical staining and survival curve of SCLC patients.

<p><b>(a)</b> Immunohistochemical staining of IGF-1R and Ki-67 (x400) in SCLC patient samples according to the expression level of IGF-1R. <b>(b)</b> Overall survival/disease-specific survival in SCLC according to low- and high-IGF-1R expression. <b>(c)</b> Disease-free survival in SCLC according to low- and high-IGF-1R expression.