Editing 1984 in science (section)

==Biology==
* First known case of [[Bovine spongiform encephalopathy]], in [[England]].<ref>{{cite news|first=David|last=Brown|title=The 'recipe for disaster' that killed 80 and left a £5bn bill|url=https://www.telegraph.co.uk/news/uknews/1371964/The-recipe-for-disaster-that-killed-80-and-left-a-5bn-bill.html|accessdate=2014-12-02|date=2001-06-19|work=[[The Daily Telegraph]]|location=London}}</ref>
* The [[enzyme]] [[telomerase]] is discovered by [[Carol W. Greider]] and [[Elizabeth Blackburn]] in the ciliate ''[[Tetrahymena]]''.<ref>{{cite journal|last1=Greider|first1=Carol W.|last2=Blackburn|first2=Elizabeth H.|title=Identification of a Specific Telomere Terminal Transferase Activity in Tetrahymena Extracts|journal=[[Cell (journal)|Cell]]|volume=43|issue=2:1|pages=405–13|date=December 1985|pmid=3907856|doi=10.1016/0092-8674(85)90170-9|doi-access=free}}</ref>
* 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.<ref>{{cite journal|last=Willadsen|first=S. M.|year=1986|title=Nuclear transplantation in sheep embryos|journal=[[Nature (journal)|Nature]]|volume=320|issue=6057|pages=63–65|doi=10.1038/320063a0|pmid=3951549|bibcode=1986Natur.320...63W|s2cid=4257911 }}</ref><ref>{{cite journal|last=Willadsen|first=S. M.|year=1989|title=Cloning of sheep and cow embryos|journal=[[Genome (journal)|Genome]]|volume=31|issue=2|pages=956–62|doi=10.1139/g89-167|pmid=2698854 }}</ref>