IHC staining of colorectal tissues was performed on 5-µm-thick formalin-fixed and paraffin-embedded (FFPE) tissue sections according to the standard procedures as described previously [14 (link)]. The sections were stained using antibodies against CXCR7 (ab72100) (Abcam, USA), α-SMA (55135-1-AP), Vimentin (10366-1-AP), and Ki67 (27309-1-AP) (Proteintech, USA) according to the manufacturers’ instructions. The IHC results were taken with a digital slide scanning system (Pannoramic Scan, 3DHISTECH Ltd) and semiquantified of mean density (IOD/area) by image-pro plus 6 software (IPP, USA).
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