The diversity and sheer number of lipids has inhibited their study, but mass spectrometry is helping scientists better identify, classify and analyze them, according to this article. "Lipids behave in a collective. You're studying the collective behavior of certain similarly built molecules. That's why lipid analysis is always 100% quantitative. We can speculate how accurate it is, but it's absolutely quantitative," says Andrej Shevchenko of the Max Planck Institute of Molecular Cell Biology & Genetics in Germany.
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