the results of examination of the template activity of the fixed polytene chromosomes of drosophila hydei , monitored by 3h-utp , under in situ assay conditions , upon the use of endogenous drosophila polymerase , exogenous escherichia coli rna polymerase ( holoenzyme ) and exogenous drosophila rna polymerase ii ( or b ) have been presented .
C0035681
rna polymerase
C0035679
rna