Lymph node biopsies of CLL‐infiltrated and tumour‐free samples were formalin‐fixed, paraffin‐embedded, arranged in Tissue Microarrays and stained for pSTAT6 (ab28829, Abcam) and pIRAK4 (ab216513, Abcam). The slides were analysed using Qupath (Bankhead et al, 2017 (link)) and the recommended protocol.
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