The present invention relates to the use of at least one antibody which binds to the SUSD2 antigen, or to functional fragments of the antibody, in combination with at least one of the following: an antibody which binds to CD140b, an antibody which binds to CD56, and/or an antibody which binds to TNAP, or functional fragments thereof, for isolation of mesenchymal stem cells, especially those having particularly chondrocytic and osteogenic differentiation potential. The invention further relates to processes for isolating such stem cells using these antibodies
