CONTAMINANTES
Scientists Create Brand New Organism: A group of scientists has created an organism that produces an amino acid that no other living thing has ever used.
All living things use the same 20 amino acids to build all of the proteins that make up all living cells. Now, scientists led by Scripps Research Institute chemistry professor Dr. Peter Schultz have engineered a version of the E. coli bacteria that can produce a 21st amino acid.