“Mitogenic doses of PGF2 alpha (42 nM) rapidly induced tyrosine phosphorylation of multiple substrates in these osteoblast-like cells.”
“ PGF2 alpha stimulated tyrosine phosphorylation of new proteins with apparent mol wt of 87, 80, 50, 47, 36, and 33 kilodaltons and up-regulated phosphorylation of preexisting tyrosine components with mol wt of 123, 112, 68, and 56 kilodaltons.”