during the course of studies of post-translational modifications of human il-1 , we have observed that although lps induced the production of both intracellular il-1 alpha and il-1 beta in human monocytes , [ 32p ] orthophosphate labeling of these cells revealed that intracellular precursor of il-1 alpha ( pre-il-1 alpha ) to be phosphorylated at least 10-fold more than intracellular pre-il-1 beta .
C0086418
human
C0021753
il-1 beta