transcription elongation, transcription repression, DSIF, Ig class switching
GO:0006368
RNA elongation from Pol II promoter
GO:0032968
positive regulation of transcription elongation from RNA polymerase II promoter
GO:0002460
adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains
spt4
Saccharomyces cerevisiae