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+[[!meta title="Ultrashort and progressive 4sU-tagging reveals key characteristics of RNA processing at nucleotide resolution."]]
+[[!tag intron degradation sequencing]]
+
+Genome Res. 2012 Oct;22(10):2031-42. doi: 10.1101/gr.131847.111.
+
+Windhager L, Bonfert T, Burger K, Ruzsics Z, Krebs S, Kaufmann S, Malterer G, L'hernault A, Schilhabel M, Schreiber S, Rosenstiel P, Zimmer R, Eick D, Friedel CC, Dölken L.
+
+Ultrashort and progressive 4sU-tagging reveals key characteristics of RNA processing at nucleotide resolution.
+
+[[!pmid 22539649 desc="60/5 min ratios “were highest for introns in a range of 300–400 nt”."]]