Danish physiologist Steen Willadsen first successfully uses cells from early embryos to clone a mammal (sheep) by nuclear transfer at the British Agricultural Research Council's Institute of Animal Physiology, Cambridge.[3][4]
July 21 – In Jackson, Michigan, a factory robot crushes a worker against a safety bar in apparently the first robot-related death in the United States.
^Willadsen, S. M. (1989). "Cloning of sheep and cow embryos". Genome. 31 (2): 956–62. doi:10.1139/g89-167.
^Kramer, P.; Neri, R. (1984). "On periodic and non-periodic space fillings of Em obtained by projection". Acta Crystallographica. A40 (5): 580. doi:10.1107/S0108767384001203.
^Maeda, Nobuyo; Yang, Funmei; Barnett, Don R.; Bowman, Barbara H.; Smithies, Oliver (1984). "Duplication within the haptoglobin Hp 2 gene". Nature. 309 (5964): 131–135. Bibcode:1984Natur.309..131M. doi:10.1038/309131a0. PMID6325933.