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Capillaries only transport blood for short distances, and within an organ. The blood supply to/from an organ is generally carried over a few major blood vessels (usually one artery, one vein). Splicing such larger blood vessels are what surgeons earn their pay to do. In terms of nerves, most transplanted organs function fairly well without being connected ...


No, MHCII mismatch can also lead to transplant rejection, though through different mechanisms. CD8+ Tcells (that recognize class I) may become activated and directly kill donor cells*, and some NK subtypes can see the lack of self MHCI and also induce cell death. MHCII mismatch on antigen presenting cells (APCs) brought along in the tissue may activate CD4+ ...

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