Related by context. Frequent words. (Click for all words.) 65 sputum samples 62 stool sample 59 tissue biopsies 59 fingerstick 59 throat swab 58 nasal swab 58 sputum 57 tuberculin skin test 57 aspirate 57 nasal secretions 57 finger prick 56 nasal swabs 56 bacilli 56 sentinel nodes 56 surgical biopsy 55 stool samples 55 needle biopsies 55 oral swab 55 pulmonary TB 55 chest x rays 55 lumbar puncture 55 sentinel lymph node 55 nosocomial 55 PCR assay 54 biopsy specimens 54 biopsies 53 barium enema 53 Staphylococcus aureus bacteria 53 needle pricks 53 prophylactic antibiotics 53 urine specimens 53 needle prick 53 Polymerase Chain Reaction PCR 52 Biopsies 52 causative agents 52 serologic 52 catheterisation 52 fine needle aspiration 52 tissue samples 52 bronchoscopy 52 noninfectious 51 liver biopsies 51 pathology laboratories 51 computed tomography CT scans 51 CMV infection 51 pancreatic tissue 51 anal canal 51 bioassays 51 cheek swabs 51 serological 51 lung nodules 51 Hemopurifier 51 skin prick 51 swab samples 50 confirmatory testing 50 pseudomonas 50 antiretroviral medication 50 fecal occult blood 50 aspergillus 50 gene amplification 50 HBsAg 50 IgG antibodies 50 histopathology 50 venipuncture 50 sentinel node 50 Computed tomography 50 endoscopist 50 CTCs 50 methemoglobinemia 50 GeneXpert 50 venous blood 50 bacterial pathogen 50 chemoprophylaxis 50 supernatant 50 swab 49 biopsy 49 noninvasive imaging 49 formalin fixed paraffin embedded 49 metastatic lesions 49 reagent kits 49 prostate biopsy 49 oropharyngeal 49 infectious organisms 49 herpes infection 49 staphylococci 49 vaginal secretions 49 chest x ray 49 plasmapheresis 49 hepatitis B hepatitis C 49 dental x rays 49 specimens 49 lymph node dissection 49 airborne droplets 49 Urine tests 49 Chlamydia pneumoniae 48 samples 48 mycobacterial 48 respiratory secretions 48 granuloma 48 sensitivity specificity 48 phenotyping