This photograph shows Sandra Odom, M.S. working with a protein purification column to remove pure IGE proteins for examination. She is also using a pipetter, pipettes, and a flask. The principal investigator for this work was Juan Rivera, Ph.D., Chief of the NIAMS Molecular Inflammation Section when the photo was taken. The work in this laboratory was directed towards understanding how allergenic agents and immune complexes activate one particular family of receptors (Fc receptors) and, through them, ultimately control the genes that produce the signals (cytokines) that in turn recruit other cells in the inflammatory response. The photograph was taken in the Molecular Inflammation Section of the Molecular Immunology and Inflammation Branch at the Clinical Research Center on the NIH Campus.