Present-day diagnostic methods involve many different disciplines, which gradually are becoming more and more esoteric. Cross-disciplinary meetings would therefore seem a logical way of disseminating knowledge. But in planning for any such meeting, the question should arise: to whom are the specialists talking? The present series of conferences are "clinical"—the intended audience would seem to be the clinician who has primary responsibility for determining the patient's disease and securing the appropriate treatment.
Clinicians must be intrigued by the range of diagnostic techniques presented in this volume. In the field of nuclear medicine, scanning techniques are well established and widely used. These are discussed at considerable length, while other less well known procedures involving isotopes are more briefly treated. In the field of pathology new developments include technical methods in securing frozen tissue sections, as well as progress in exfoliative cytology and other cytologic techniques. Immunologic techniques, such as immunoelectrophoresis and