This photograph shows Yumi Yamashita, Ph.D., working with acryl amide gels to separate proteins after electropheresis. The principal investigator for this work was Juan Rivera, Ph.D., who was Chief of the NIAMS Molecular Inflammation Section when the photo was taken. The work in this laboratory is 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.