Fig. 7

The differential expression of LTF and its association with survival and potential functional mechanism in PTC patients. a LTF expression in multiple tumor and normal tissues based on the TIMER database. b Differentiated expression of LTF in tumor and normal tissues from the TCGA database. c Paired analysis of LTF expression between tumor and normal tissues from the same patient in the TCGA database. d KM survival curve of PFIs in patients in the low LTF and high LTF expression groups in the TCGA database. e Diagnostic efficacy of the ROC curve of LTF. f Methylation level of LTF according to UALCAN. g LTF protein expression levels in the normal thyroid follicular epithelial cell line Nthy-ori 3–1 and PTC cell lines. h Examples of IHC staining of LTF in PTC tissues and adjacent noncancerous tissues. i Comparison of LTF protein expression in 30 pairs of matched paraffin section samples by IHC