In 1975, the biologists associations of the different countries of the EEC have been fede­rated in the European Communities Biologists Association (E.C.B.A.).

This formation of an association was timely, since the progressive development in the multilateral relationship between the different states of the EEC, established in the Agreement of Rome in 1957, which resulted in common monetary, economic and social policies and which aimed a free movement of professionals in Europe, had led some other bodies of free professionals to come to an understanding of joint activities and cooperation.

Furthermore, the practice of the political and administrative bodies of the European Commission to negotiate with European, and not with national bodies, strengthened the basic move to build an association.