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
Fig 2: Histological analysis of PDXs.A. Double immunofluorescence analysis of ACTA2 (red) and PGR (green) in MED12-LM PDXs grown in hosts supplemented with no hormone (control), E2 and E2 + P4. Expression of PGR is E2 dependent. B. Identification of human and mouse cells by nuclear morphology. Human cells have diffuse nuclear staining; mouse cells have granular nuclear staining for heterochromatin. Also indicated are smooth muscle cells (SMC, red arrows) and tumor-associated fibroblasts (TAF, yellow arrows). C. Human origin of vascular endothelial cells in UL PDX. Two anti-PECAM1 (endothelial marker) antibodies, Abcam ab28364 (1:200) and Chemicon #90214 (1:200), preferentially stained mouse uterus (UT) over human ULs, whereas Cell Signaling Technologies #3528 anti-PECAM1 (1:100) antibody preferentially stained human endothelial cells. Chemicon #21540 anti-VWF antibody (1:200) was non-reactive with mouse endothelial cells. Almost all blood vessels in PDXs were strongly positive for VWF, indicating their human origin.
Supplier Page from Abcam for Anti-CD31 antibody