claim: The Raven (2012 film) was released the United States in 2012.
evidence: Site-directed spin labeling -LRB- SDSL -RRB- is a technique for investigating the structure and local dynamics of proteins using electron spin resonance .. electron spin resonance. electron spin resonance. The theory of SDSL is based on the specific reaction of spin labels with amino acids .. A spin label 's built-in protein structure can be detected by EPR spectroscopy .. protein. protein. spin label. spin label. EPR. Electron spin resonance. SDSL is also a useful tool in examinations of the protein folding process .. protein. protein. protein folding. protein folding