Disclosed herein are methods of increasing the proliferation of non-tumorigenic B cells. The methods involve administering PCDGF and optionally other B cells stimulators (e.g., IgM, LPS) to B cells resulting in an increase in B cell proliferation. The methods of the invention can be used, for example, to establish B cells lines, to sort B cells from a mixed population of cells, or to activate resting B cells.

 
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< Cultures of GFAP.sup.+ nestin.sup.+ cells that differentiate to neurons

> Regulatory T cells and their use in immunotherapy and suppression of autoimmune responses

> Mounting device for mounting a retainer means for a biological object and corresponding method for laser micro-dissection

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