[Methods of isolation and quantitative analysis of fibronectin in biological fluids].

The theoretical and methodological aspects of fibronectin isolation and quantitative determination in biological fluids are analysed on the basis of the communications available in the literature and the authors' own data. The procedure of applying the analyzed methods, potential complexity and errors in interpreting the data obtained by various methods are briefly outlined. Possible fields of their application, such as basic and clinical investigations, biotechnological production, etc. are also discussed.