Institution: | (1) Department of Zoology, Duke University, 27706 Durham, NC, USA;(2) Abteilung für Membranbiologie und Biochemie, Institut für experimentelle Pathologie, Deutsches Krebsforschungszentrum, Abteilung für Zoologie, Universität Heidelberg, D-6900 Heidelberg, Germany;(3) Present address: Department of Biology, Seton Hall University, 07079 South Orange, NJ, USA;(4) Present address: Department of Biology, Lilly Hall of Life Sciences, Purdue University, 47907 West Lafayette, IN, USA |