For instance, an antibody array detecting the level of insulin-like growth factor-binding protein 2 (IGFBP2) and P-cadherin via semi-dry dot-blot method was developed for this purpose, based on the fact that high levels of these two proteins are indicators of micropapillary or solid components in early-stage lung cancer (60). The gene discussed is IGFBP2; the disease is lung carcinoma.