This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Urea is a small molecule formed as proteins ...
Walberg, C. B., Ph.D. dissertation, Univ. of Southern California (1957). Seneca, H., Lattimer, J. K., Zinsser, H. H., Donovan, J. T., Peer, P., and Stuart, P., J ...
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