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R (symbol) R-2 R/O RA Rabbit Fever Rabies Raccoon Roundworm Infection Racemose Racemose Aneurysm Rad Rad51 Radial Radial Drusen Radial Head Dislocation Radial Head Subluxation Radial Keratotomy Radiate Radiation Radiation During Pregnancy Radiation Fibrosis Radiation Menopause Radiation Oncologist Radiation Oncology Radiation Pneumonitis Radiation Sickness Radiation Therapy Radiation Therapy, 3-D Radiation Therapy, Conformal Radiation Therapy, Conformational Radiation Therapy, External Radiation Therapy, Internal Radiation Therapy, Stereotactic Radiation Therapy, Targeted Radiation Toxicity Radiation, Background Radiation, Food Radiation, Ultraviolet Radical Dissection Radical Neck Radical Neck Dissection Radical Prostatectomy Radiculopathy Radiculopathy, Lumbar Radioactive Radioactive Iodine Radioactive Tracer Radioallergosorbent Test Radiofrequency Ablation Radiograph Radiography Radioimmunoassay Radioinsensitive Radioiodine Radioisotope Radiologic Radiologist Radiology Radiology, Interventional Radiolucent Radiomimetic Radionuclide Radionuclide Scan Radionuclide Stress Test Radiopaque Radiosensitive Radiotherapy Radiotherapy, Stereotactic Radium Radius Radon Raeder's Syndrome Ragged Red Fibers With Cpeo Ragweed Raised Hemidiaphragm Rale Ramsay Hunt Syndrome Ramsay Hunt, James Ramus Ramus of The Mandible Random Random Mating Random Sample Randomization Randomized Randomized Clinical Trial Range Range of Motion Range, Normal Rantes Rape Rape, Date Rapid Eye Movement Sleep Rapid Plasma Reagin Test Rapid Strep Test Rash Rash, Butterfly Rash, Chickenpox Rash, Varicella Rash, Vesicular Rash, Yeast Diaper Rasmussen Encephalitis Rasmussen Syndrome Rast Rat, Cotton Rat, Rice Rat-Flea Typhus Rate, Basal Metabolic Rate, Birth Rate, Death Rate, Erythrocyte Sedimentation Rate, Fetal Mortality Rate, Heart Rate, Infant Mortality Rate, Maternal Mortality Rate, Mortality Rate, Neonatal Mortality Rate, Pulse Rate, Respiratory Rate, Sed Rate, Sedimentation Rattlesnake Bite Raw Egg Ray, Roentgen Raynaud's Disease Raynaud's Phenomenon RBC RDA Rdis (reference Daily Intakes) Rds (respiratory Distress Syndrome) Re-Uptake Reabsorption Reactant, Acute Phase Reactant, Acute-Phase Reaction Kinetics Reaction, Allergic Reaction, Chemical Reaction, Desmoplastic Reaction, Hibernation Reaction, Polymerase Chain Reaction, Vasovagal Reactive Arthritis Reactive Oxygen Species Reading Frame Reading Frame, Open Reading Retardation Reagent Reaven Syndrome Rebound Rebound Effect Recalcitrant Recalls, Fda Recent Memory Receptor Receptor, Chemokine Receptor, T-Cell Receptor, Visual Recessive Recessive, Autosomal Recessive, X-Linked Recipient Reciprocal Translocation Recombinant Recombinant Clones Recombinant Dna Advisory Committee (rac) Recombinant Dna Molecules Recombinant Dna Technology Recombination Recombivax-Hb Recommended Daily Allowance Recommended Dietary Allowance Recreational Water Illness Recrudescence Rectal (adjective) Rectal (noun) Rectal Bleeding Rectal Cancer Rectal Exam, Digital (dre) Rectal Incontinence Rectal Itching Rectocele Rectouterine Pouch Rectum Rectus Rectus Abdominis Recuperate Recur Recurrence Recurrence Risk Recurrent Recurrent Abortion Recurrent Aural Vertigo Recurrent Laryngeal Nerve Recurrent Respiratory Papillomatosis Recurrent Trisomy Red Blood Cell Red Blood Cells Red Cell Count Red Cell Distribution Width Red Cells Red Corpuscles Red Devils Red Ear Syndrome Red Eye Red Jungle Fowl Red Jungle Fowl Genome Red Shield Red-Green Colorblindness Reduction Division Reduction Mammaplasty Reduction, Breast Reduviid Bug Redux Reed-Sternberg Cell Referral Referred Pain Reflex Reflex Sympathetic Dystrophy (rsd) Reflex Sympathetic Dystrophy Syndrome (rsds) Reflex, Babinski Reflex, Let Down Reflex, Patellar Reflex, Patellar Tendon Reflex, Photic Sneeze Reflex, Pressor Reflex, Quadriceps Reflux Reflux Disease, Gastroesophageal (gerd) Reflux Laryngitis Reflux Surgery (fundoplication) Reflux, Esophageal Refract Refraction Refractory Refractory Anemia Refsum Disease Regenerate Regimen Region, Regulatory Regional Enteritis Regional Lymphadenitis Registry Registry, Tumor Regress Regulatory Gene Regulatory Region Regulatory Sequence Regulatory T Cell Regurgitation Regurgitation, Aortic Regurgitation, Mitral Rehab Rehabilitation Rehydrate Rehydration Reiki Reimplantation Reinnervate Reinnervation Reinstein Syndrome Reiter Syndrome Rejection Relapse Relapsing Fever Relaxant Relaxin Release, Carpal Tunnel rem Rem Sleep Remedy Remission Remission Induction Chemotherapy Remodeling, Chromatin Remodelling, Chromatin Remote Telesurgery Renal Renal Aneurysm Renal Artery Stenosis Renal Calculi Renal Cancer Renal Capsule Renal Cell Cancer Renal Cell Carcinoma Renal Fanconi Syndrome Renal Osteodystrophy Renal Pelvis Renal Stone Renal Syndrome With Hemorrhagic Fever Renal Transplant Renal Tubules Renal Vein Thrombosis Rendu-Osler-Weber Syndrome rep Repair, Dna Repair, Hernia Repair, Mismatch Repeat Reperfusion Repetitive Dna Repetitive Stress Injury Replacement Therapy, Estrogen (ert) Replacement Therapy, Hormone (hrt) Replacement Therapy, Testosterone Replacement, Total Hip Replantation Replication Replication, Dna Reportable Disease Reporting, Anonymous Reporting, Named Reporting, Unique Identifier Representational Oligonucleotide Microarray Reproduction Reproductive Cells Reproductive Organs, Female Reproductive System Research, Clinical Research, Controlled Resect Resectable Resection Resection, Video-Assisted Reservoir Reservoir of Infection Reservoir, Ommaya Resident Residual Resin, Bile Acid Resistance Resistance, Antibiotic Resistance, Aspirin Resistance, Insulin Resistance, Pulmonary Resistance, Vascular Resolution Resorb Resorption Respiration Respiratory Respiratory Disease, Acute Respiratory Distress Syndrome (rds) Respiratory Distress Syndrome, Acute Respiratory Failure Respiratory Insufficiency Respiratory Papillomatosis, Recurrent Respiratory Rate Respiratory Syncytial Virus Respiratory System Respiratory Therapy Response, Babinski Response, Hyperglycemic Response, Plantar Rest Restenosis Resting Phase Restitution Restless Leg Syndrome Restless Legs Restriction Endonuclease Restriction Enzyme Restriction Fragment Length Polymorphism Restriction Map Restriction Site Resuscitate Resuscitation Resveratrol Retardation, Reading Retic Retic Count Reticulocyte Reticulocyte Count Reticulocytosis Reticuloendotheliosis, Leukemic Retina Retina, Detached Retinal Retinal Artery, Central Retinal Detachment Retinal Disease Retinal Electrophysiologic Testing Retinal Fundus Retinal Pigment Epithelium Retinal Vasculitis Retinal Vein, Central Retinal Wrinkling Retinitis Pigmentosa Retinitis Pigmentosa And Congenital Deafness Retinoblastoma Retinoic Acid Syndrome Retinoid Retinol Retinopathy Retinopathy, Arteriosclerotic Retinopathy, Diabetic Retinoschisis Retinoschisis, Juvenile Retinoschisis, X-Linked Retinoschisis, X-Linked Juvenile Retraction Syndrome Retrodiagnosis Retrograde Amnesia Retrograde Intrarenal Surgery (rirs) Retromingent Retroposition Retropubic Prostatectomy Retrospective Retrospective Diagnosis Retrospective Study Retrosternal Retrovirus Rett Syndrome Reuptake Reversal of Organs, Total Reverse Genetics Reverse Transcriptase Reverse Transcriptase-Polymerase Chain Reaction Reye Syndrome RF RFA Rflp Rh Factor Rh Incompatibility Rhabdomyolysis Rhabdomyosarcoma Rheumatic Fever Rheumatic Heart Disease Rheumatism Rheumatism, Generalized Rheumatism, Localized Rheumatism, Psychogenic Rheumatoid Arthritis Rheumatoid Arthritis, Systemic-Onset Juvenile Rheumatoid Factor Rheumatoid Nodules Rheumatoid Spondylitis Rheumatologist Rheumatologist, Pediatric Rheumatology Rhinitis Rhinitis Acute Rhinitis Chronic Rhinitis, Allergic Rhinitis, Allergic, Perennial Rhinitis, Allergic, Seasonal Rhinitis, Vasomotor Rhinophyma Rhinoplasty Rhinorrhea Rhinotillexomania Rhogam Rhythm Method Rhythm, Sinus Rib Rib Cage Rib, Cervical Rib, False Rib, Floating Rib, Fluctuating Rib, Sternal Rib, True Rib, Vertebral Ribonucleic Acid (rna) Ribonucleoprotein (rnp) Ribosomal Rna Ribosome Ribozyme Rice Genome Rice Rat Richard L. Varco Ricin Rickets Rickets, Celiac Rickets, Hypophosphatemic Rickets, Renal Rickets, Vitamin D Resistant Ricketts, Howard T. Rickettsia Rickettsial Diseases Rickettsialpox Rickettsioses Rickettsioses of The Eastern Hemisphere, Tick-Born Rickettsiosis, North Asian Tick-Borne Rickettsiosis, Vesicular Rift Valley Fever Right Atrium Right Heart Right Hepatic Duct Right Ventricle Right-Handed Riley-Day Syndrome Ring Chromosome Ring Vaccination Ring, Intrastromal Corneal Ringing in The Ears Ringworm of The Nails Riot Control Agent Poisoning Rirs (retrograde Intrarenal Surgery) Risk Factor Risk of Recurrence Ritter Disease River Blindness RLL RLQ RML Rmsf RNA Rna Editing Rna Inactivation Rna Interference Rna Polymerase Rna Silencing Rna Virus Rna Virus, Negative-Strand Rna Virus, Positive-Strand Rna, Messenger Rna, Ribosomal Rna, Transfer Rnai Roach-2 Roapies Robertsonian Translocation Robo Robotripping Robust Rochalimaea Quintana Rock (drug) Rocky Mountain Spotted Fever (rmsf) Rocky Mountain Wood Tick Rod Rodbell Rodbell, Martin Rodenticidal Rodenticide Roentgen Roentgen Ray Roentgen, Wilhelm Roentgenology Rohypnol Roma Romano-Ward Syndrome Roofies Rooting Reflex Rorschach Test Rosacea Rosacea Keratitis Rosary Pea Roseola Roseola Infantilis Roseola Infantum Rossi Counter Rotator Cuff Rotator Cuff Disease Rotavirus Roth's Spot Rothmund-Thomson Syndrome Round Window Roundworm Roundworm C. Elegans Genome Roundworm Genome Roux-En-Y Gastric Bypass Royal Society, The RP Rpr Test Rrna RS1 RSV RT Rt-Pcr RTS Rtt (rett Syndrome) Ru-486 Rubella (historical Note) Rubella Immunization Rubella Syndrome Rubella Vaccine Rubeola (measles) Rubor RUL Rule Out Rumination Runny Nose Runt-Related Transcription Factor 1 Runx-1 Rupture, Uterine Ruptured Spleen RUQ RV (rotavirus) RVF RWI Rx RX RXT
