World demand for amino acids - the protein building blocks found in all living cells - is projected to advance 5.6 percent per annum to $7.5 billion in 2004. In real terms, sales will advance 4.5 percent annually to 5.8 billion pounds over the same period. Overall, the industry is poised for healthy growth in the coming years, thanks to burgeoning applications in animal feed, pharmaceuticals and nutraceuticals.