Site-specific 100% isotope labeling is straightforward but costly alternative ( 97JB55 ).

Site-specific low-enrichment 15N,13C ( 02JACS1160 and 02JB257 ).

Solid-phase synthesis of selectively labeled DNA. Application to NMR ( 01METH261 )

Uniform 13C/15N labeling of DNA by tandem repeat amplification ( 01METH283 )

2H-labeled RNA oligonucleotides in NMR studies ( 01METH320 )