Multiple myeloma is a cancer in which immunoglobulin-producingplasma cells undergo clonal expansion. Its characteristic featureis the monoclonal, or M, spike, usually detectable in serumor urine by protein electrophoresis. Malignant plasma cellshave complex chromosomal rearrangements, leading in many casesto the aberrant activation of gene expression. Some of theseactivated genes encode secreted factors that can modify themicroenvironment of the tumor in a manner that favors its growthor promotes its ability to cause lesions in surrounding tissues.The mechanism of bone destruction, a feature of multiple myeloma,is the focus of the article by Tian . . . [Full Text of this Article]
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From the Department of Molecular and Human Genetics, Baylor College of Medicine, Houston.
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