In the law firms Ropes & Gray LLP advised Immucor, a leading transfusion and transplantation diagnostics company, in its acquisition of Sentilus Inc. Durham, N.C.-based Sentilus is the developer of a novel microarray-based technology called Femtoarrays for use in a variety of in vitro diagnostics areas. The firm’s team was led by private equity partner Neill P. Jakobe and health-care counsel Alison J. Fethkeas well as attorneys in Boston and New York. • Power, Rogers & Smith P.C. partner Todd …