The Eleventh Edition of Boyd's Introduction to the Study of Disease now contains a substantial amount of material in the appendices—condensing the material in the text—making it a great resource for the student already familiar with normal physiology and essential biology. New to this edition is information on: the cytoskeleton, care of the patient, HIV virus and AIDS, aging, Helicobacter and gastric ulcer, changes in infectious disease patterns, oncogenes and cancer, cytokines, and the eosinophilia-myalgia syndrome. There is also data on changing patterns in breast and gastric cancer, as well as epidemiological shifts in heart attacks, strokes, streptococcal disease, measles, and other common diseases.