Editing DNA computing (section)

=== Neural network based computing ===
Kevin Cherry and [[Lulu Qian]] at Caltech developed a DNA-based artificial neural network that can recognize 100-bit hand-written digits. They achieved this by programming on a computer in advance with the appropriate set of weights represented by varying concentrations weight molecules which are later added to the test tube that holds the input DNA strands.<ref>{{Cite journal|last1=Qian|first1=Lulu|last2=Winfree|first2=Erik|last3=Bruck|first3=Jehoshua|date=July 2011|title=Neural network computation with DNA strand displacement cascades|journal=Nature|language=En|volume=475|issue=7356|pages=368–372|doi=10.1038/nature10262|pmid=21776082|s2cid=1735584|issn=0028-0836}}</ref><ref name=":4">{{Cite journal|last1=Cherry|first1=Kevin M.|last2=Qian|first2=Lulu|date=2018-07-04|title=Scaling up molecular pattern recognition with DNA-based winner-take-all neural networks|journal=Nature|language=En|volume=559|issue=7714|pages=370–376|doi=10.1038/s41586-018-0289-6|pmid=29973727|issn=0028-0836|bibcode=2018Natur.559..370C|s2cid=49566504|url=https://authors.library.caltech.edu/84840/}}</ref>