dimers dimeric protein dimers dimers [en] dimers dimerization dimers dimerization dimer dimerization dimer dimeric dimer heterodimer dimers dimer dimerisation dimers dimer dimerisation heterodimers dimers dimer dimeric protein dimeric dimer dimerisation dimer heterodimeric dimer dimeric dimer homodimer dimer dimeric dimer dimers dimers dimerization dimer heterodimer dimer dimer dimeric protein dimer heterodimer dimeric dimeric dimeric protein dimers dimer dimer dimer protein dimer dimers dimer heterodimer dimers heterodimers dimers dimers dimerization protein dimers dimer dimeric protein dimers heterodimer dimers dimeric dimer dimers heterodimero dimeric protein dimerization dimer heterodimer