Immunohistochemistry was performed as previously described [9 (link),37 (link)]. Samples were incubated with HORMAD1 rabbit polyclonal antibody (Novus Biologicals, Centennial, CO, USA, NBP1-85401) or STRA8 (Abcam, ab49602; RRID:AB_945678) at a dilution of 1:500. Immunoreactivity was evaluated in Quantitative Pathology and Bioimage Analysis (Qupath; RRID:SCR_018257) using images of samples scanned on a Zeiss Axio scanner. Cell counts were performed randomly in three regions. The percentage of HORMAD1 or STRA8 immunostaining was used for analysis across 18 samples with corresponding positive and negative controls.
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