Science Friday Edit this Published in Science Friday A Decade After the Genome, Scientists Map the 'Proteome' Listen Queue Download this audio Want to embed this player? Use the code below. More info. <iframe width="600" height="130" frameborder="0" scrolling="no" src="//www.wnyc.org/widgets/ondemand_player/wnyc/#file=json/374972"></iframe> Share on Facebook Share on Twitter Email a Friend Nearly all the body's cells contain identical DNA. So why does a neuron grow up so differently than a liver cell? Proteins, says Akhilesh Pandey, a professor at the Johns Hopkins University.