View source for CD31-45

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            <p align="center"><strong>&nbsp;<font color="#ffff00">CD&nbsp;antigen</font></strong></p>
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            <p align="center"><strong><font color="#ffff00">&nbsp;MW.(kDa)&nbsp; </font></strong></p>
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            <p align="center"><strong><font color="#ffff00">&nbsp;Synonyms &amp; Properties</font></strong></p>
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            <p align="center"><strong><font color="#ffff00">&nbsp;Leukocyte expression&nbsp;&nbsp;</font></strong></p>
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            <p align="center"><strong><font color="#ffff00">&nbsp;Function</font></strong></p>
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            <td><strong>&nbsp;CD31</strong></td>
            <td>&nbsp;130-140</td>
            <td>&nbsp;GPiia, endocam, platelet endothelial cell&nbsp;adhesion molecule&nbsp;<br />
            (PECAM-1) &nbsp;</td>
            <td>&nbsp;Endothelial cells, platelets, monocytes, neutrophils, NK cells, subsets of T cells&nbsp;</td>
            <td>&nbsp;Adhesion molecule&nbsp;</td>
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            <td bgcolor="#cccccc"><strong>&nbsp;CD32</strong></td>
            <td bgcolor="#cccccc">&nbsp;40</td>
            <td bgcolor="#cccccc">&nbsp;FCRⅡ, Fc&gamma;RⅡ&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;B cells, granulocytes, monocytes</td>
            <td bgcolor="#cccccc">&nbsp;Receptor for Fc portion of antigen-antibody-complexed IgG molecules&nbsp;</td>
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            <td><strong>&nbsp;CD33</strong></td>
            <td>&nbsp;67</td>
            <td>&nbsp;gp67, p67</td>
            <td>&nbsp;Monocytes, myeloid precursors&nbsp;</td>
            <td>&nbsp;Sialic acid-dependent cytoadhesion molecule, a sialoadhesion&nbsp;</td>
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            <td bgcolor="#cccccc"><strong>&nbsp;CD34</strong></td>
            <td bgcolor="#cccccc">&nbsp;40 (based on amino seq.)</td>
            <td bgcolor="#cccccc">&nbsp;gp105-120&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;Early lymphohematopoeitic stem and progenitor cells, small-vessel endothelial cells, embryonic&nbsp;fibroblasts, some cells in fetal and adult nervous tissue&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;Cell-cell adhesion molecule&nbsp;</td>
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            <td><strong>&nbsp;CD35</strong></td>
            <td>&nbsp;Many forms: 160, 190, 220, 250, 165, 195, 225, 255</td>
            <td>&nbsp;C3bR, C4bR, complement receptor type one (CR1), immune adherence receptor&nbsp;</td>
            <td>&nbsp;Erythrocytes, neutrophils, monocytes, eosinophils, B cells&nbsp;</td>
            <td>&nbsp;Receptor for C4b/C3b particles, mediating their adherence and phagocytosis; facilitator of C3b and C4b cleavage, thus limiting complement activation&nbsp;</td>
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            <td bgcolor="#cccccc"><strong>&nbsp;CD36</strong></td>
            <td bgcolor="#cccccc">&nbsp;88-113 (platelet form)</td>
            <td bgcolor="#cccccc">&nbsp;GPⅢb, GPIV, OKM5-antigen, PASIV&nbsp; </td>
            <td bgcolor="#cccccc">&nbsp;Platelets, mature monocytes / macrophages, endothelial cells&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;Adhesion molecule in platelet adhesion and aggregation, and in platelet-monocyte or platelet-tumor cell interaction; molecule for&nbsp;recognition of apoptotic neutrophils; scavenger receptor for oxidized LDL&nbsp;</td>
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            <td><strong>&nbsp;CD37</strong></td>
            <td>&nbsp;40-52</td>
            <td>&nbsp;gp52-50</td>
            <td>&nbsp;B cells; low levels on T cells, neutrophils, granulocytes, and monocytes&nbsp;</td>
            <td>&nbsp;Role in signal transduction&nbsp;</td>
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            <td bgcolor="#cccccc"><strong>&nbsp;CD38</strong></td>
            <td bgcolor="#cccccc">&nbsp;45</td>
            <td bgcolor="#cccccc">&nbsp;T10&nbsp; </td>
            <td bgcolor="#cccccc">&nbsp;Early-stage B and T cells, germinal-center B cells, plasma cells&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;NAD glycohydrolase&nbsp;</td>
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            <td><strong>&nbsp;CD39</strong></td>
            <td>&nbsp;40-52</td>
            <td>&nbsp;Bp50&nbsp;</td>
            <td>&nbsp;B cells, T cells, neutrophils, granulocytes, monocytes&nbsp;&nbsp; </td>
            <td>&nbsp;Role in signal transduction&nbsp;</td>
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            <td bgcolor="#cccccc"><strong>&nbsp;CD40</strong></td>
            <td bgcolor="#cccccc">&nbsp;48 (monomer)</td>
            <td bgcolor="#cccccc">&nbsp;Bp50&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;B-lineage cells (pro-B through plasma cells), macrophages, follicular dendritic cells, endothelial cells, fibroblasts, keratinocytes, CD34+ hematopoeitic cell progenitors&nbsp;&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;Roles in B-cell growth, differentiation, and isotype-switching; apoptosis rescue signal for germinal-center B cells; stimulation of cytokine production in macrophages and dendritic cells; up-regulation of adhesion molecules on dendritic cells</td>
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            <td><strong>&nbsp;CD41</strong></td>
            <td>&nbsp;&alpha;&beta; dimer: &alpha;, 125; &beta;, 122&nbsp;</td>
            <td>&nbsp;GlycoproteinⅡb (GPⅡb) &alpha;Ⅱb&nbsp;integrin chain; forms platelet fibrinogen receptor by association with GP Ⅲa&nbsp;</td>
            <td>&nbsp;&nbsp;Platelets, megakaryocytes</td>
            <td>&nbsp;Subunit of platelet fibrinogen receptor, which mediates platelet aggregation by acting as receptor for fibrinogen; possibly also receptor for von Willebrand factor, fibronectin, and thrombospondin&nbsp;</td>
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            <td bgcolor="#cccccc"><strong>&nbsp;CD42a,b,c,d</strong></td>
            <td bgcolor="#cccccc">&nbsp;a, 23;&nbsp;<br />
            &nbsp;b, 135,23;&nbsp;<br />
            &nbsp;c, 22;</td>
            <td bgcolor="#cccccc">&nbsp;a, GPIX; b, GPIb-&alpha;; c, GPIb-&beta;; d, GPV</td>
            <td bgcolor="#cccccc">&nbsp;Platelets, megakaryocytes&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;Adhesion of platelets to endothelium; amplification of platelet response to thrombin&nbsp;</td>
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            <td><strong>&nbsp;CD43</strong></td>
            <td>&nbsp;95-115 in&nbsp;<br />
            T cells, 115-135 in neutrophils</td>
            <td>&nbsp;gpL115, leukocyte sialoglycoprotein, leukosialin, sialophorin&nbsp;</td>
            <td>&nbsp;All leukocytes except most resting B cells&nbsp;</td>
            <td>&nbsp;Possible anti-adhesive (&quot;barrier&quot;) molecule mediating repulsion between leukocytes and other cells&nbsp;</td>
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            <td bgcolor="#cccccc"><strong>&nbsp;CD44</strong></td>
            <td bgcolor="#cccccc">&nbsp;85</td>
            <td bgcolor="#cccccc">&nbsp;ECMR&nbsp;Ⅲ, H-CAM, HUTCH-1, Hermes, Lu, Pgp-1, gp85&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;Surface of most cell types&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;Adhesion molecule mediating leukocyte attachment and homing to peripheral lymphoid organs and sites of inflammation&nbsp;</td>
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            <td><strong>&nbsp;CD44R</strong></td>
            <td>&nbsp;85-250 in epithelial cells; 85-200 in lymphocytes</td>
            <td>&nbsp;CD44v, CD44v9; heterogenous group of CD44 variant isoforms designated by the variant exons that they&nbsp;include (v2-v10 in humans)&nbsp;</td>
            <td>&nbsp;Epithelial cells and monocytes (constitutively), activated leukocytes&nbsp;</td>
            <td>&nbsp;Possible role (particulary for CD44v6) in leukocyte attachment to and rolling on endothelial cells, homing to peripheral lymphoid organs and sites of inflammation&nbsp;</td>
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            <td bgcolor="#cccccc"><strong>&nbsp;CD45</strong></td>
            <td bgcolor="#cccccc">&nbsp;210, 220, 180, 200</td>
            <td bgcolor="#cccccc">&nbsp;Leukocyte common antigen (LCA), T200, EC 3.1.3.4; many dofferent isoforms with different molecular weights, e.g..<br />
            B220, CD45R, CD45RA, CD45RB, CD45RC, CD45RO&nbsp;</td>
            <td bgcolor="#cccccc">&nbsp;All hematopoeitic cells; different isoforms characteristic of differentiated subsets of various hematopoeitic cells</td>
            <td bgcolor="#cccccc">&nbsp;Essential role in T-and B-cell antigen-receptor-mediated activation; possible role in receptor-mediated activation in other leukocytes&nbsp;</td>
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