blood cell

After exhausting all other treatments, he was told he needed a transplant of stem cells – which can be found in the bone marrow and produce essential blood cells – to survive.

They say it does that by increasing the number of red blood cells that contain haemoglobin, which transports oxygen around the body, but this remains a disputed subject and many say further studies are required.

My white blood cell count was low too, which can also be a sign of cancer.

These are tiny cyborgs, though even tinier ones exist, involving microbes like bacteria or even a type of white blood cell.

He’s undergoing a second round of chemotherapy and receiving white blood cell injections to aid his immune system.