The same amino acid can be encoded by anywhere from one to six different strings of letters in the genetic code. Andrzej Wojcicki/Science Photo Library via Getty Images Nearly all life, from bacteria ...
The genetic code is the recipe for life, and provides the instructions for how to make proteins, generally using just 20 amino acids. But certain groups of microbes have an expanded genetic code, in ...
Medicines that reshape or tamp down immune responses may be life-changing for patients with cancer and autoimmune disorders, but in some cases they can awaken a dormant virus and unleash a deadly ...
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