Related by context. Frequent words. (Click for all words.) 58 serologic 56 rheumatoid factor 56 liver biopsies 56 Western blot 56 seropositive 55 Western Blot 55 serological 55 HSCT 54 nasal swab 54 confirmatory testing 54 FeLV 54 estrogen receptor ER 53 confirmatory tests 53 vitro experiments 53 nasal swabs 53 serum samples 52 skin prick 52 prostate biopsy 52 genotoxicity 52 prophylactic antibiotics 52 throat swab 52 urine specimens 52 Prostate Specific Antigen PSA 51 IgM 51 LCMV 51 creatinine levels 51 revaccination 51 viremia 51 Salmonella Enteritidis 51 WNV infection 51 toxicological studies 51 pulmonary TB 50 haematological 50 latent TB infection 50 D dimer 50 sensitivity specificity 50 digital rectal examination 50 administered subcutaneously 50 intramuscular injections 50 biopsy specimens 50 surrogate endpoint 50 screening colonoscopy 50 peripheral blood mononuclear 50 tests 50 bone marrow biopsy 50 liver biopsy 50 Biopsies 49 HER2/neu 49 prostate biopsies 49 herpes infection 49 sputum samples 49 multivariate analyzes 49 patients evaluable 49 bioassay 49 sentinel lymph node 49 PREZISTA r 49 latent tuberculosis 48 Tissue samples 48 RECIST criteria 48 bioassays 48 hemoglobin A1C 48 aspergillosis 48 antibody responses 48 immunohistochemistry 48 placebo controlled clinical trials 48 mycoplasma 48 CMV infection 48 confirmatory 48 histopathological 48 anaplasmosis 48 fecal occult blood 48 FOBT 47 PCV2 47 pseudorabies 47 biopsies 47 Urine samples 47 coccidiosis 47 oral glucose tolerance 47 rectally 47 pneumococcal vaccination 47 disease vCJD 47 Salmonella enteritidis 47 vaginal secretions 47 pulmonary tuberculosis 47 radioiodine 46 microbiological testing 46 vaccinia 46 Varicella 46 salmonella enteritidis 46 immunohistochemical 46 Hemopurifier 46 toxicological tests 46 bioequivalence studies 46 L. monocytogenes 46 genital tract 46 fecal samples 46 B. anthracis 46 equine herpes virus 46 revaccinated 46 varicella 46 specific antigen