question: Define lncRNA.
answer: Long noncoding RNAs (lncRNAs) represent a newly discovered class of regulatory molecules that impact a variety of biological processes in cells and organ systems. In humans, it is estimated that there may be more than twice as many lncRNA genes than protein-coding genes. However, only a handful of lncRNAs have been analyzed in detail.
  Long non-coding RNAs (lncRNAs) are emerging as key molecules in cancers, yet their potential molecular mechanisms are not well understood.
  long noncoding RNAs (lncRNAs), the largest family of noncoding transcripts, have emerged as common regulators of many cellular stressors; including heat shock, metabolic deprivation and DNA damage.