Fig 1: Examples of immunostained formalin fixed paraffin embedded intervertebral disc tissue sections. A, Aquaporin 7 (Abcam ab85907) cell membrane staining, canine nucleus pulposus (NP) tissue. B, Cytoplasmic Indian Hedgehog (Santa Cruz sc-1196) staining, human NP tissue. C, Nuclear localisation of TonEBP (Abcam ab3446), human NP tissue. D, Pericellular and matrix staining of collagen type II (Abcam ab34712), human NP tissue. E, Staining of aquaporin 6 (Abcam ab191061) indicating cartilaginous endplate (CEP) localisation, canine IVD tissue. F, CD31 (Abcam ab28364) staining within human annulus fibrosus (AF) tissue indicating the presence of endothelial cell infiltration. G, CCL3 (Abcam ab32609) staining within cell clusters, human NP tissue. H, Mouse IgG3, Kappa isotype control (Abcam ab18394), human NP tissue. I, Rabbit IgG isotype control (Abcam ab37415), human NP tissue. A, B, E, F, G, H, I scale bar = 100 µm. C, D scale bar = 50 µm