On the occasion of the celebration of the 40th anniversary of the Macedonian Academy of Sciences and Arts (MASA) the Macedonian Society of Nephrology, Dialysis, Transplantation and Artificial Organs (MSNDTAO) organized a one day symposium titled: “Artificial Organs Today: From in vitro assessment to human therapies”, on September 28, 2007 at the Macedonian Academy of Sciences and Arts. The following sessions were held: Artificial Organs in Front of the Ageing Populations; System Requirements for Artificial Organ Technology; Tools for Artificial Organ Technology; Extracorporeal Blood Circuits in Organ Replacement Therapies; Treatment Options for Blood Purification Therapies. Presentation were delivered by: Horst Klinkmann, Germany; Jörg Vienken, Germany; Jens Hartmann, Austria; Udo Losert, Austria; Jan Wojcicki, Poland; Helmut Mann and Siegfried Stiller, Germany; Beat Walpoth, Switzerland; Juan F. del Cañizo, Spain; Borce Georgievski, Macedonia; Bernd Stegmayr, Sweden; Momir Polenakovic, Macedonia; Petar Kes, Croatia; Aleksandar Sikole, Macedonia; Wolfgang Ramlow, Germany; Dieter Falkenhagen, Austria. These meetings are significant for the application and development of the artificial organs in patients.