Five litres of blood carry oxygen to every cell, clot within minutes when a vessel is cut and never otherwise, and hold the white cells that tell self from stranger — all of it made in the marrow, two million red cells a second, for a lifetime. Cancer is what happens when that control fails in any tissue: one cell gathers, over years, the few changes that let it divide without permission, refuse to die, recruit a blood supply and travel. Run on the page for a model patient: the marrow, the count and the film; haemoglobin, iron, anaemia and transfusion; platelets, clotting, bleeding and thrombosis; the white cells and the lymphoid system; the cell cycle, the hallmarks, clonal evolution and metastasis; the leukaemias, lymphomas and myeloma; staging, chemotherapy, radiotherapy, targeted and immune therapy, screening and the reading of a trial. Run the marrow, read the film, form the clot and grow the clone — every number computed by the page, and never a diagnosis for anyone.
Every count, film, clot, clone and curve on these pages is computed by the page for a model patient, or cited with its source; your progress stays in this browser. Nothing here is medical advice: there is no diagnosis, dose, regimen, prognosis or decision for anyone, and a person’s own results are read with their own doctors against their own laboratory’s ranges. If you or someone close to you is ill, your own team, and the support services they can point you to, are the place to turn. The course names no brand of drug, test or device, and no hospital. Not affiliated with or endorsed by any organisation, hospital, government body, company, publisher or author mentioned here.