[Fractionation of human erythrocytes according to their sedimentation behaviour caused by gravity. I. Methodical Investigations (author's transl)].

The usefulnes of a method to differentiate erythrocytes according to their specific gravity introduced by Danon et al. is demonstrated by using blood samples of healthy children and of others with different haematological diseases. Several conditions affecting the results are investigated. For clinical purposes the simple method is only applicable, if the results are presented as intervals of density.