 During this year, Eduard Kellenberger returned to Switzerland without his wife, and they divorced in 1967.Grete Kellenberger-Gujer continued to work in Kansas and later accepted a position as an independent researcher in a lab run by Lucien Caro at the Oak Ridge National Laboratory in Tennessee.In 1971, she returned to Geneva and worked in Lucien Caro's lab in the Department of Molecular Biology until her retirement in 1980.