
PI3K regulates branch initiation and extension of cultured mammary epithelia via Akt and Rac1 respectively
Keywords: ECM; extracellular matrix; EGF; epidermal growth factor; FGF; fibroblast growth factor; GEF; guanine nucleotide exchange factor; HGF; hepatocyte growth factor; MMP; matrix metalloproteinase; PAK; p21-activated kinase; PI3K; phosphoinositide 3-kinase; PTEN