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In accordance with this, Ryan\n                    <jats:italic>et al.<\/jats:italic>\n                    found that after the injection of protein synthesis inhibitors, animals could not retrieve a memory. However, to their surprise, the memory could nevertheless be reactivated by light-induced activation of the neurons tagged during conditioning. Increased synaptic strength that is the result of cellular consolidation is thus not a critical requisite for storing a memory.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:italic>Science<\/jats:italic>\n                    , this issue p.\n                    <jats:related-article xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"doi\" issue=\"6238\" page=\"1007\" related-article-type=\"in-this-issue\" vol=\"348\" xlink:href=\"10.1126\/science.aaa5542\">1007<\/jats:related-article>\n                  <\/jats:p>","DOI":"10.1126\/science.aaa5542","type":"journal-article","created":{"date-parts":[[2015,5,28]],"date-time":"2015-05-28T15:48:26Z","timestamp":1432828106000},"page":"1007-1013","source":"Crossref","is-referenced-by-count":714,"title":["Engram cells retain memory under retrograde amnesia"],"prefix":"10.1126","volume":"348","author":[{"given":"Tom\u00e1s J.","family":"Ryan","sequence":"first","affiliation":[{"name":"RIKEN-MIT Center for Neural Circuit Genetics at the Picower Institute for Learning and Memory, Department of Biology and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA."},{"name":"Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02139, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dheeraj S.","family":"Roy","sequence":"additional","affiliation":[{"name":"RIKEN-MIT Center for Neural Circuit Genetics at the Picower Institute for Learning and Memory, Department of Biology and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michele","family":"Pignatelli","sequence":"additional","affiliation":[{"name":"RIKEN-MIT Center for Neural Circuit Genetics at the Picower Institute for Learning and Memory, Department of Biology and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Autumn","family":"Arons","sequence":"additional","affiliation":[{"name":"RIKEN-MIT Center for Neural Circuit Genetics at the Picower Institute for Learning and Memory, Department of Biology and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA."},{"name":"Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02139, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Susumu","family":"Tonegawa","sequence":"additional","affiliation":[{"name":"RIKEN-MIT Center for Neural Circuit Genetics at the Picower Institute for Learning and Memory, Department of Biology and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA."},{"name":"Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02139, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","reference":[{"key":"e_1_3_2_2_2","first-page":"1","volume":"1","author":"M\u00fcller G. 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