De biologische werkzaamheid van epoëtine beta, na intraveneuze en subcutane toediening, is bij verschillende proefdiermodellen in vivo aangetoond (normale en uremische ratten, polycythaemische muizen, honden). ###>The biological efficacy of epoetin beta has been demonstrated after intravenous and subcutaneous administration in various animal models in vivo (normal and uraemic rats, polycythaemic mice, dogs).