ERRATUM: ENCE' LENA'S LETTERS

Transient Xist-ence

well as transcript accumulation were qualitatively examined ; (2) nuclear runoff experiments, in which the tran-Howard Hughes Medical Institute scription rate was compared between cells that accu-Department of Cell Biology mulate Xist RNA (such as female somatic cells) and cells Baylor College of Medicine that do not (such as male ES cells); and (3) pulse–chase Houston, Texas 77030 experiments,...

Erratum

Letters, we've got letters...

So, you want to write a letter to the editor? A recent editorial by Golub in JAMA prompted us to outline more fully our vision of Annals of Emergency Medicine’s Correspondence section and its place within the journal and the peer review process. Like most peer-reviewed publications, Annals of Emergency Medicine contains a correspondence section, commonly known as Letters to the Editor. Journals...

Letters Letters n Editor:

“Fronti Nulla Fides”: No reliance can be placed on appearance. In a letter to the editor (AI Mugazine, Winter 1989), Benjamin Kuipers criticizes various points made in an earlier paper of ours (Akman and ten Hagen 1989). First, a side (nonetheless important) remark: Although Kuipers asserts that he distributes QSIM to interested researchers, our experience has been otherwise. Akman has tried tw...

Separating k-Separated eNCE Graph Languages

Kim, C. and D.H. Lee, Separating k-separated eNCE graph languages, Theoretical Computer Science 120 (1993) 247-259. An eNCE graph grammar is k-separated (k > 1) if the distance between any two nonterminal nodes in any of its sentential forms is at least k. Let SEP, denote the class of graph languages generated by SEPl (SEP2) is the class of eNCE (boundar E) graph languages, Recently, Engelfriet...