Clusters definition

Having particularly in view intermetallic substances (crystals, quasicrystals) a critical discussion by Steurer (2005) on several questions concerning clusters (definition, stability, etc.) is especially interesting (see also 4.4.4.8). 

Receptors are labeled according to their UniProt entry names. For cluster definition, see Ref. 30. 

Schematic representation of the hematopoietic cascade in mice and human (hum). All the cells of the hematopoietic system are positive for antigen CD45. Based on this, the dynamics of surface antigen expression along development of different mature cells derived from the hematopoietic stem cell system can be observed. Rounded arrows indicate self-renewal potential. Smooth thinner arrows indicate directions of cellular differentiation. The identification of CDs (clusters definition) and other antigen cell markers are listed in the glossary. (LT-HSC - long term hematopoietic stem cell ST-HSC - short term hematopoietic stem cell MPP - multipotent progenitor CLP - common lymphoid precursor CMP - common myeloid precursor GMP - granulocyte-monocyte precursor MEP - megacaryocyte-erythrocyte precursor T - T lymphocyte B - B lymphocyte NK - natural killer cell DC - dendritic cell).

The cluster definitions can overlap, which allow degree of fuzziness for samples that lay on the boundaries of different clusters. 

Structure of the Cluster. Definition of variables is important in the following discussions we use the following notations c, molar concentration of the cluster p, distance from its center v, 0, 1, volume, cross-section, and length of one monomer. These values are obtained from crystallographic data. The chains are treated as ideal free jointed rods of monomers. For numerical applications, we generally use the case of polyethylene v = 50 A3, 0 = 20 X2, 1 = 2,5 I. (1 + a)v will be taken as the volume of one neutralized charged ionomer. In many applications we shall take, for simplicity, a = 0 for the dry state. If the cations are solvated by V water molecules for each of volume vQ (30 AJ), a simple additivity rule for the volumes give av = WQ. 

Temperature dependence of Magnetism fitted assuming a biniiclear cluster. Definition of T uncertain [73M20]. 

Electric Polarizabilities and Hyperpolarizabilities of Clusters Definitions and Theory... 

---