This publication examines the techniques of fluorescence within microscopy and citometry. The book covers a number of the basic and the potential applications of the technologies in this sector. This edition contains three main areas split into 16 chapters, of major development that are delivered in a clear and concise format: the fluorescence and confocal microscopy; flow citometry and in situ fluorescent hybridisation. Without doubt these areas have contributed to the very level of development of qualitative and quantitative information of the cellular structure and function. Published by the University of Oviedo Publications Service anyone requiring a copy should contact this service: C/. Argüelles no.19, Oviedo ;Spain.