| R Factors |
R Plasmids |
Rabies |
| Rabies Vaccines |
Rabies virus |
Raccoon |
| Raccoons |
Race |
Race Relations |
| Raclopride |
Racquet Sports |
Radial Artery |
| Radial Nerve |
Radial Neuropathy |
Radiating Pain |
| Radiation |
Radiation Dosage |
Radiation Injuries |
| Radiation Monitoring |
Radiation Oncology |
Radiation Protection |
| Radiation Tolerance |
Radiation, Gamma |
Radiation, Ionizing |
| Radiation, Nonionizing |
Radiation-Induced Cancer |
Radiation-Sensitizing Agents |
| Radiations, X |
Radical Mastectomy |
Radical Neck Dissection |
| Radicular Cyst |
Radiculopathy |
Radio |
| Radio Waves |
Radio-Opaque acrylic resin |
Radioactive Fallout |
| Radioactive Hazard Release |
Radioactive Pollutants |
Radioactive Tracers |
| Radioactive Waste |
Radioallergosorbent Test |
Radiobiology |
| Radiochemistry |
Radiodermatitis |
Radiographic Image Enhancement |
| Radiographic Image Interpretation, Computer-Assisted |
Radiographic Magnification |
Radiography, Abdominal |
| Radiography, Bitewing |
Radiography, Dental |
Radiography, Dental, Digital |
| Radiography, Dual-Energy Scanned Projection |
Radiography, Interventional |
Radiography, Panoramic |
| Radiography, Thoracic |
Radioimmunoassay |
Radioimmunodetection |
| Radioimmunoprecipitation Assay |
Radioimmunosorbent Test |
Radioimmunotherapy |
| Radioisotope Dilution Technique |
Radioisotope Renography |
Radioisotope Teletherapy |
| Radioisotopes |
Radioligand Assay |
Radiologic Health |
| Radiological Health |
Radiology |
Radiology Department, Hospital |
| Radiology Information Systems |
Radiology, Interventional |
Radiometry |
| Radionuclide Angiography |
Radionuclide Generators |
Radionuclide Ventriculography |
| Radiopharmaceuticals |
Radiosurgery |
Radiotherapy Dosage |
| Radiotherapy Planning, Computer-Assisted |
Radiotherapy, Adjuvant |
Radiotherapy, Computer-Assisted |
| Radiotherapy, Conformal |
Radiotherapy, High-Energy |
Radiotherapy, Intensity-Modulated |
| Radium |
Radius |
Radius Fractures |
| Radon |
Raffinose |
Rage |
| Railroads |
Rain |
Rains |
| Raloxifene |
Ramipril |
Rana |
| Rana pipiens |
Random Allocation |
Random Amplified Polymorphic DNA Technique |
| Randomized Controlled Trials as Topic |
Range of Motion, Articular |
Range, Reference |
| Ranidae |
Ranitidine |
RANK Ligand |
| Ranula |
Rape |
Raphe Nuclei |
| Rare Disease |
Rare Diseases |
Rash |
| Rasmussen Encephalitis |
Rate Setting and Review |
Rates, Survival |
| Rats |
Rats, Gunn |
Rats, Inbred BB |
| Rats, Inbred F344 |
Rats, Inbred Lew |
Rats, Inbred OLETF |
| Rats, Inbred SHR |
Rats, Inbred Strains |
Rats, Inbred WKY |
| Rats, Long-Evans |
Rats, Mutant Strains |
Rats, Spontaneously Hypertensive |
| Rats, Sprague-Dawley |
Rats, Wistar |
Rauvolfia Alkaloids |
| Rauwolfia |
Raynaud Disease |
Razoxane |
| Reaction Time |
Reactive Nitrogen Species |
Reactive Oxygen Species |
| Reading |
Reading Frames |
Reagent Kits, Diagnostic |
| Reagent Strips |
Reagents |
Reagins |
| Reality Testing |
Reality Therapy |
Reassortant Viruses |
| Receptor Activator of Nuclear Factor-kappa B |
Receptor Protein-Tyrosine Kinases |
Receptor, Adenosine A2A |
| Receptor, Angiotensin, Type 1 |
Receptor, Angiotensin, Type 2 |
Receptor, Cannabinoid, CB1 |
| Receptor, Epidermal Growth Factor |
Receptor, erbB-2 |
Receptor, erbB-3 |
| Receptor, Fibroblast Growth Factor, Type 1 |
Receptor, Fibroblast Growth Factor, Type 2 |
Receptor, Fibroblast Growth Factor, Type 3 |
| Receptor, IGF Type 1 |
Receptor, IGF Type 2 |
Receptor, Insulin |
| Receptor, Interferon alpha-beta |
Receptor, Macrophage Colony-Stimulating Factor |
Receptor, Melanocortin, Type 1 |
| Receptor, Melanocortin, Type 4 |
Receptor, Nerve Growth Factor |
Receptor, neu |
| Receptor, PAR-2 |
Receptor, Platelet-Derived Growth Factor alpha |
Receptor, Serotonin, 5-HT1A |
| Receptor, Serotonin, 5-HT1B |
Receptor, Serotonin, 5-HT2A |
Receptor, Serotonin, 5-HT2B |
| Receptor, Serotonin, 5-HT2C |
Receptor, trkC |
Receptor, TSH |
| Receptors, Adenosine A2 |
Receptors, Adrenergic |
Receptors, Adrenergic, alpha |
| Receptors, Adrenergic, alpha-1 |
Receptors, Adrenergic, alpha-2 |
Receptors, Adrenergic, beta |
| Receptors, Adrenergic, beta-1 |
Receptors, Adrenergic, beta-2 |
Receptors, Adrenergic, beta-3 |
| Receptors, Androgen |
Receptors, Angiotensin |
Receptors, Antigen, B-Cell |
| Receptors, Antigen, T-Cell |
Receptors, Antigen, T-Cell, gamma-delta |
Receptors, Calcitonin Gene-Related Peptide |
| Receptors, Calcitriol |
Receptors, Calcium-Sensing |
Receptors, Cannabinoid |
| Receptors, CCR4 |
Receptors, CCR5 |
Receptors, CCR7 |
| Receptors, Cell Surface |
Receptors, Chemokine |
Receptors, Cholecystokinin |
| Receptors, Cholinergic |
Receptors, Collagen |
Receptors, Complement 3b |
| Receptors, Complement 3d |
Receptors, Corticotropin-Releasing Hormone |
Receptors, CXCR4 |
| Receptors, Cytokine |
Receptors, Cytoplasmic and Nuclear |
Receptors, Dopamine |
| Receptors, Dopamine D1 |
Receptors, Dopamine D2 |
Receptors, Dopamine D3 |
| Receptors, Dopamine D4 |
Receptors, Drug |
Receptors, Endothelin |
| Receptors, Erythropoietin |
Receptors, Estrogen |
Receptors, Fc |
| Receptors, Fibroblast Growth Factor |
Receptors, Fibronectin |
Receptors, FSH |
| Receptors, G-Protein-Coupled |
Receptors, GABA |
Receptors, GABA-A |
| Receptors, Gastrointestinal Hormone |
Receptors, Glucagon |
Receptors, Glucocorticoid |
| Receptors, Glutamate |
Receptors, Granulocyte Colony-Stimulating Factor |
Receptors, Granulocyte-Macrophage Colony-Stimulating Factor |
| Receptors, H2 |
Receptors, Histamine |
Receptors, Histamine H1 |
| Receptors, Histamine H2 |
Receptors, Histamine H3 |
Receptors, HIV |
| Receptors, IgE |
Receptors, IgG |
Receptors, Immunologic |
| Receptors, Interferon |
Receptors, Interleukin |
Receptors, Interleukin-1 |
| Receptors, Interleukin-12 |
Receptors, Interleukin-2 |
Receptors, kappa |
| Receptors, LDL |
Receptors, Leptin |
Receptors, Leukocyte-Adhesion |
| Receptors, Leukotriene |
Receptors, Leukotriene B4 |
Receptors, LH |
| Receptors, Lipoprotein |
Receptors, Lymphocyte Homing |
Receptors, Metabotropic Glutamate |
| Receptors, Muscarinic |
Receptors, Nerve Growth Factor |
Receptors, Neurokinin-1 |
| Receptors, Neuropeptide |
Receptors, Neurotransmitter |
Receptors, Nicotinic |
| Receptors, Odorant |
Receptors, Opioid |
Receptors, Opioid, delta |
| Receptors, Opioid, kappa |
Receptors, Opioid, mu |
Receptors, OSM-LIF |
| Receptors, Oxytocin |
Receptors, Parathyroid Hormone |
Receptors, Pattern Recognition |
| Receptors, Platelet-Derived Growth Factor |
Receptors, Progesterone |
Receptors, Prolactin |
| Receptors, Prostaglandin |
Receptors, Prostaglandin E |
Receptors, Purinergic P2 |
| Receptors, Retinoic Acid |
Receptors, Serotonin |
Receptors, Serotonin, 5-HT1 |
| Receptors, Serotonin, 5-HT3 |
Receptors, Serotonin, 5-HT4 |
Receptors, sigma |
| Receptors, Somatostatin |
Receptors, Somatotropin |
Receptors, Steroid |
| Receptors, Thrombin |
Receptors, Thrombopoietin |
Receptors, Thyroid Hormone |
| Receptors, Thyrotropin |
Receptors, TNF-Related Apoptosis-Inducing Ligand |
Receptors, Transferrin |
| Receptors, Transforming Growth Factor beta |
Receptors, Tryptamine |
Receptors, Tumor Necrosis Factor |
| Receptors, Tumor Necrosis Factor, Type I |
Receptors, Tumor Necrosis Factor, Type II |
Receptors, Urokinase Plasminogen Activator |
| Receptors, Vasopressin |
Receptors, Vitronectin |
Recognition (Psychology) |
| Recombinant Erythropoietin |
Recombinant Fusion Proteins |
Recombinant Granulocyte-Macrophage Colony-Stimulating Factors |
| Recombinant Proteins |
Recombination, Genetic |
Reconstructive Surgical Procedures |
| Records as Topic |
Recovery of Function |
Recovery Room |
| Recovery Rooms |
Recreation |
Recruitment, Neurophysiological |
| Rectal Cancer |
Rectal Diseases |
Rectal Fistula |
| Rectal Neoplasms |
Rectal Prolapse |
Rectocele |
| Rectovaginal Fistula |
Rectum |
Rectum Cancer |
| Rectus Abdominis |
Recurrence |
Recurrences |
| Recurrent Laryngeal Nerve |
Red Blood Cells |
Red Cell Indices |
| Red Cross |
Red-Cell Aplasia, Pure |
Reducing Agents |
| Reductase |
Reed-Sternberg Cells |
Reference Books |
| Reference Books, Medical |
Reference Ranges |
Reference Standards |
| Reference Value |
Reference Values |
Referral |
| Referral and Consultation |
Referrals |
Reflex |
| Reflex Sympathetic Dystrophy |
Reflex, Abnormal |
Reflex, Acoustic |
| Reflex, Gag, Absent |
Reflex, Monosynaptic |
Reflex, Oculocardiac |
| Reflex, Pupillary |
Reflex, Stretch |
Reflex, Vestibulo-Ocular |
| Reflux Esophagitis |
Refraction, Ocular |
Refractive Error |
| Refractive Errors |
Refractive Surgery |
Refractive Surgical Procedures |
| Refractometry |
Refractory Period, Electrophysiological |
Refrigeration |
| Refsum Disease, Infantile |
Refugees |
Refusal |
| Refusal to Treat |
Refuse Disposal |
Regeneration |
| Regenerative Medicine |
Regional Blood Flow |
Regional Health Planning |
| Regional Medical Programs |
Registries |
Registry |
| Regression (Psychology) |
Regression Analysis |
Regulatory Sequences, Nucleic Acid |
| Regulon |
Rehabilitation Centers |
Rehabilitation Nursing |
| Rehabilitation of Hearing Impaired |
Rehabilitation Outcome |
Rehabilitation, Vocational |
| Rehydration |
Rehydration Solutions |
Reimbursement Mechanisms |
| Reimbursement, Incentive |
Reindeer |
Reinforcement (Psychology) |
| Rejection (Psychology) |
Rejuvenation |
Relapse |
| Relapses |
Relapsing Fever |
Relative Biological Effectiveness |
| Relative Risk |
Relatives |
Relaxation |
| Relaxation Therapy |
Relaxin |
Relief Work |
| Religion |
Religion and Medicine |
Religion and Psychology |
| Religion and Sex |
REM Sleep Behavior Disorder |
REM Sleep Parasomnias |
| Remedial Teaching |
Reminder Systems |
Remission Induction |
| Remission, Spontaneous |
Remittent Fever |
Remote Consultation |
| Removable Orthodontic Appliances |
Remoxipride |
Remuneration |
| Renal Agents |
Renal Aminoacidurias |
Renal Arteries |
| Renal Artery |
Renal Artery Obstruction |
Renal Artery Stenosis |
| Renal Blood Flow, Effective |
Renal Calculi |
Renal Calculus |
| Renal Cancer |
Renal Cell Carcinoma |
Renal Circulation |
| Renal Colic |
Renal Cortical Necrosis |
Renal Dialysis |
| Renal Disease, End-Stage |
Renal Failure |
Renal Failure, Acute |
| Renal Failure, Chronic |
Renal Failure, End-Stage |
Renal Insufficiency |
| Renal Insufficiency, Acute |
Renal Insufficiency, Chronic |
Renal Neoplasms |
| Renal Osteodystrophy |
Renal Pelvis |
Renal Plasma Flow |
| Renal Plasma Flow, Effective |
Renal Replacement Therapy |
Renal Tubular Acidosis |
| Renal Tubular Transport, Inborn Errors |
Renal Vein |
Renal Veins |
| Renin |
Renin-Angiotensin System |
Rennin |
| Renography |
Reoperation |
Repair Material |
| Repeat Cesarean Section |
Reperfusion |
Reperfusion Injury |
| Repetitive Sequences, Nucleic Acid |
Replantation |
Replica Techniques |
| Replicon |
Repression |
Repressor Proteins |
| Reproducibility of Results |
Reproduction |
Reproduction Techniques |
| Reproductive Behavior |
Reproductive Control Agents |
Reproductive Health |
| Reproductive Health Services |
Reproductive History |
Reproductive Medicine |
| Reproductive Rights |
Reproductive Techniques |
Reproductive Techniques, Assisted |
| Reproductive Technology, Assisted |
Reptile |
Reptiles |
| Reptilian Proteins |
Rescue Work |
Research |
| Research Activities |
Research Design |
Research Methodology |
| Research Personnel |
Research Subjects |
Research Support as Topic |
| Researcher |
Researcher-Subject Relations |
Researchers |
| Reserpine |
Residence Characteristics |
Residency |
| Residential Facilities |
Residential Mobility |
Residual Tumor |
| Residual Volume |
Resilience, Psychological |
Resin Cements |
| Resins, Plant |
Resins, Synthetic |
Resistin |
| Resorcinols |
Resort |
Resource |
| Resource Allocation |
Resources |
Respiration |
| Respiration Disorders |
Respiration, Artificial |
Respiratory Aspiration |
| Respiratory Burst |
Respiratory Care Units |
Respiratory Center |
| Respiratory Dead Space |
Respiratory Distress Syndrome, Acute |
Respiratory Distress Syndrome, Adult |
| Respiratory Distress Syndrome, Newborn |
Respiratory Failure |
Respiratory Function Tests |
| Respiratory Hypersensitivity |
Respiratory Insufficiency |
Respiratory Mechanics |
| Respiratory Mucosa |
Respiratory Muscles |
Respiratory Paralysis |
| Respiratory Physiological Phenomena |
Respiratory Protective Devices |
Respiratory Rate |
| Respiratory Sounds |
Respiratory Syncytial Virus Infections |
Respiratory Syncytial Virus, Human |
| Respiratory Syncytial Viruses |
Respiratory System |
Respiratory System Abnormalities |
| Respiratory System Agents |
Respiratory Systems |
Respiratory Therapy |
| Respiratory Therapy Department, Hospital |
Respiratory Tract |
Respiratory Tract Diseases |
| Respiratory Tract Fistula |
Respiratory Tract Infections |
Respiratory Tract Neoplasms |
| Respirovirus Infections |
Respite Care |
Respondents |
| Response Elements |
Response, Acute-Phase |
Rest |
| Restaurants |
Resting Tremor |
Restless Legs Syndrome |
| Restlessness |
Restraint, Physical |
Restriction Enzyme Analysis |
| Restriction Mapping |
Resuscitation |
Resuscitation Orders |
| Rete Testis |
Retention (Psychology) |
Reticular Formation |
| Reticulin |
Reticulocyte Count |
Reticulocytes |
| Reticulocytosis |
Reticuloendothelial System |
Retina |
| Retinal |
Retinal Artery |
Retinal Artery Occlusion |
| Retinal Breaks |
Retinal Cone Photoreceptor Cells |
Retinal Degeneration |
| Retinal Detachment |
Retinal Diseases |
Retinal Drusen |
| Retinal Dysplasia |
Retinal Ganglion Cells |
Retinal Hemorrhage |
| Retinal Hemorrhages |
Retinal Necrosis Syndrome, Acute |
Retinal Neoplasms |
| Retinal Neovascularization |
Retinal Perforations |
Retinal Pigments |
| Retinal Rod Photoreceptor Cells |
Retinal Vasculitis |
Retinal Vein |
| Retinal Vein Occlusion |
Retinal Vessels |
Retinas |
| Retinitis |
Retinitis Pigmentosa |
Retinoblastoma |
| Retinoblastoma Protein |
Retinoic Acid |
Retinoids |
| Retinol-Binding Proteins |
Retinol-Binding Proteins, Plasma |
Retinopathy of Prematurity |
| Retinoscopy |
Retirement |
Retreatment |
| Retrobulbar Hemorrhage |
Retrocochlear Diseases |
Retrognathism |
| Retrograde Obturation |
Retrolental Fibroplasia |
Retroperitoneal Fibrosis |
| Retroperitoneal Neoplasms |
Retroperitoneal Space |
Retropharyngeal Abscess |
| Retropneumoperitoneum |
Retrospective Studies |
Retrospective Study |
| Retroviridae |
Retroviridae Infections |
Retrovirus |
| Rett Syndrome |
Reverse Transcriptase Inhibitors |
Reverse Transcriptase Polymerase Chain Reaction |
| Reverse-Phase Liquid Chromatography |
Review Literature as Topic |
Reward |
| Rewarming |
Reye Syndrome |
Rh Isoimmunization |
| Rh-Hr Blood-Group System |
Rhabdoid Tumor |
Rhabdomyolysis |
| Rhabdomyoma |
Rhabdomyosarcoma |
Rhabdomyosarcoma, Alveolar |
| Rhabdomyosarcoma, Embryonal |
Rhabdoviridae |
Rhabdoviridae Infections |
| Rhamnaceae |
Rhenium |
Rheographies |
| Rheology |
Rheum |
Rheumatic Disease |
| Rheumatic Diseases |
Rheumatic Fever |
Rheumatic Heart Disease |
| Rheumatic Nodule |
Rheumatoid Arthritis |
Rheumatoid Factor |
| Rheumatoid Nodule |
Rheumatology |
Rhinitis |
| Rhinitis, Allergic, Perennial |
Rhinitis, Allergic, Seasonal |
Rhinitis, Atrophic |
| Rhinitis, Vasomotor |
Rhinomanometry |
Rhinoplasty |
| Rhinoscleroma |
Rhinosporidiosis |
Rhinosporidium |
| Rhinosporidium seeberi |
Rhinovirus |
Rhizobium |
| Rhizobium leguminosarum |
Rhizome |
Rhizopus |
| Rhizotomy |
RHO(D) antibody |
Rho(D) antigen |
| Rho(D) Immune Globulin |
Rhodamines |
Rhodium |
| Rhodopsin |
Rhus |
Rhythmicities |
| Rhytidoplasty |
Rib |
Rib Fractures |
| Ribavirin |
Riboflavin |
Riboflavin Deficiency |
| Ribonucleases |
Ribonucleoproteins |
Ribonucleoproteins, Small Nuclear |
| Ribonucleosides |
Ribose |
Ribosomal Proteins |
| Ribosomal RNA |
Ribosomes |
Ribotyping |
| Ribs |
Rice |
Rickets |
| Rickets, Vitamin D-Resistant |
Rickettsia |
Rickettsia Infections |
| Rickettsia prowazekii |
Rickettsiaceae |
RID |
| Rifabutin |
Rifampicin |
Rifampin |
| Rifamycins |
Rift Valley Fever |
Rift Valley fever virus |
| Right Atrium |
Right Bundle Branch Block |
Right Flank Pain |
| Right to Die |
Right Ventricle |
Rights |
| Ring Chromosomes |
Ringer's lactate |
Riots |
| Risk |
Risk Adjustment |
Risk Assessment |
| Risk Factors |
Risk Management |
Risk Reduction Behavior |
| Risk-Taking |
Risks |
Risperidone |
| Ristocetin |
Ritanserin |
Ritodrine |
| Ritonavir |
Rituals |
Rivers |
| RNA |
RNA Helicases |
RNA Interference |
| RNA Polymerase I |
RNA Polymerase II |
RNA Polymerase III |
| RNA Precursors |
RNA Replicase |
RNA Splicing |
| RNA Virus |
RNA Virus Infections |
RNA Viruses |
| RNA, Bacterial |
RNA, Catalytic |
RNA, Double-Stranded |
| RNA, Helminth |
RNA, Heterogeneous Nuclear |
RNA, Messenger |
| RNA, Neoplasm |
RNA, Protozoan |
RNA, Ribosomal, 16S |
| RNA, Ribosomal, 18S |
RNA, Small Cytoplasmic |
RNA, Small Interfering |
| RNA, Transfer, Leu |
RNA, Untranslated |
RNA, Viral |
| RNA-Binding Protein EWS |
RNA-Binding Proteins |
RNA-Dependent DNA Polymerase |
| RNA-Directed DNA Polymerase |
Robotics |
ROC Analysis |
| ROC Curve |
Rocky Mountain Spotted Fever |
Rodent |
| Rodent Diseases |
Rodentia |
Rodenticides |
| Rodents |
Roferon-A |
Role |
| Role Playing |
Roman World |
Rooming-in Care |
| Root Canal |
Root Canal Filling Materials |
Root Canal Irrigants |
| Root Canal Obturation |
Root Canal Preparation |
Root Canal Therapy |
| Root Caries |
Root Nodules, Plant |
Root Planing |
| Root Resorption |
Rorschach Test |
Rosa |
| Rosacea |
Rosaceae |
Rosai-Dorfman Disease |
| Rosaniline Dyes |
Rose |
Rose Bengal |
| Roseolovirus Infections |
Rosette Formation |
Rosmarinus |
| Rotation |
Rotator Cuff |
Rotavirus |
| Rotavirus Infections |
Rotavirus Vaccines |
Rotaviruses |
| Rothmund-Thomson Syndrome |
Rotifera |
Round Ligament |
| Round Window, Ear |
Roxithromycin |
RT-PCR |
| Rubber |
Rubber Dams |
Rubella |
| Rubella Syndrome, Congenital |
Rubella Vaccine |
Rubella virus |
| Rubiaceae |
Rubidium |
Rubredoxins |
| Rugby |
Rumen |
Ruminants |
| Running |
Rupture |
Rupture, Spontaneous |
| Ruptures |
Rural Communities |
Rural Development |
| Rural Health |
Rural Health Services |
Rural Population |
| Russell's Viper |
Rutaceae |
Ruthenium |
| Ruthenium Radioisotopes |
Rutin |
Ryanodine |
| Ryanodine Receptor Calcium Release Channel |
|