A Series , B Series , C Series , D Series , E Series , F Series , G Series , H Series , I Series , K Series , L Series , M Series , N Series , O Series , P Series , Q Series , R Series , S Series , T Series , U Series , V Series , W Series , X Series , Y Series , Z Series

Radiation Sterilization, Radio Immunoassay(RIA), Radioactive Material, Raw Material, rDNA(Recombinant DNA), Reagent, Reagent Grade Water, Recalcification, Recessive Allele, Recirculation, Recombinant, Recombinant Clone, Recombinant DNA Molecules, Recombinant DNA Techniques, Recombinant DNA Technology, Recombination, Recovery, Recovery Time, Reference Standards - Primary, Referential Integrity, Refrigerants, Regenerate, Regulatory Affairs, Regulatory Region or Sequence, Reject Stream, Relational Database Management System(RDBMS), Relative Humidity(%H), Release, Renaturation, Representative Sample, Reproductive Toxicology, Reprocessing, Reprocessing(ICH API Definition), Resin, Resistance(Filter), Resolution, Restriction Enzyme Cutting Site, Restriction Fragment Length Polymorphism(RFLP), Retest Date, Retinoblastoma, Retrospective Validation, Retrovirus, Revalidation, Reverse Osmosis(RO), Reworking, Ribosomal RNA(rRNA), Ribosomes, Rickettsias, Rinse, Roller Bottles, Rouge, Roughness, Restriction Enzyme, Recombinant DNA (rDNA)

Recombinant DNA Molecules
In the context of the NIH Guidelines, recombinant DNA molecules are those constructed outside living cells by joining natural or synthetic DNA segments to DNA molecules that can replicate in a living cell, or molecules that result from the replication of those described above.