RR

• radiation reaction;

• radiation response;

• rate ratio;

• rational recovery [group];

• recovery room;

• recurrence risk;

• reference reagent;

• regulatory region;

• relative resistance;

• relative response;

• relative risk;

• renin release;

• resistant relapse;

• respiratory rate;

• respiratory reserve;

• response rate;

• results reporting [system];

• retinal reflex;

• rheumatoid rosette;

• ribonucleotide reductase;

• risk ratio;

• Riva-Rocci [sphygmomanometer];

• Ross River [virus];

• ruthenium red