This text covers every injury to the bone marrow which can occur from low and high doses of ionising radiation - for example, X-rays, gamma-rays and especially damaging types of radiation such as alpha-rays. The book deals with both medical uses of radiation, for example in radiotherapy and in conditioning regimens prior to marrow transplantation in the treatment of leukaemia, and radiation from environmental and man-made sources. The book contains 10 specialist chapters and a more general chapter in which the above material is summarised and presented in a form aimed at the well-educated lay reader.