Thyrotropin-Luteinizing Hormone/Chorionic Gonadotropin Receptor Extracellular Domain Chimeras as Probes for Thyrotropin Receptor FunctionYuji Nagayama, Harry L. Wadsworth, Gregorio D. Chazenbalk, Diego Russo, Pui Seto and Basil Rapoport · Proceedings of the National Academy of Sciences of the United States of America · 1991