Results 1 to 10 of about 5,583,624 (329)

False-negative reactions to the comparative intradermal tuberculin test for bovine tuberculosis [PDF]

Pesquisa Veterinária Brasileira, 2017
: According to the Brazilian National Program for the Control and Eradication of Animal Brucellosis and Tuberculosis (PNCEBT), the routine tests for the diagnosis of bovine tuberculosis in the country are the simple intradermal tuberculin test (SITT) of ...
Rudielle A. Rodrigues, Ingrid I.F.S. Meneses, Klaudia S.G. Jorge, Márcio R. Silva, Lenita R. Santos, Walter Lilenbaum, Rodrigo N. Etges, Flábio R. Araújo   +7 more
doaj   +3 more sources

A Fatal Case of Herpes Simplex Encephalitis with Two False-Negative Polymerase Chain Reactions [PDF]

Case Reports in Neurology, 2018
An 88-year-old man presented with a 1-month history of altered mental status and seizures. His electrographic and imaging findings were suggestive of herpes simplex encephalitis (HSE), for which he was empirically treated with acyclovir. He underwent two
Aldo A. Mendez, Annaliese Bosco, Lama Abdel-Wahed, Kendra Palmer, Karra A. Jones, Annie Killoran   +5 more
doaj   +3 more sources

Preventing intense false positive and negative reactions attributed to the principle of ELISA to re-investigate antibody studies in autoimmune diseases

Journal of Immunological Methods, 2014
To study the possible involvement of potential environmental pathogens in the pathogenesis of autoimmune diseases, it is essential to investigate antibody responses to a variety of environmental agents and autologous components.
Kuniaki Terato, Christopher Do, Takaki Waritani   +2 more
exaly   +2 more sources

In-depth evaluation of false-positive biological reactions in the syphilis serological diagnosis: a cross-sectional study with two sampling components [PDF]

Frontiers in Cellular and Infection Microbiology
ObjectivesThis study aimed to systematically evaluate the disease spectrum, demographic characteristics, and autoantibody profiles associated with biological false-positive (BFP) reactions in serological tests for syphilis.MethodsA retrospective analysis
Jing Li, Xiaohan Li, Yike Huang, Fei Ye, Xi Lin, Dongdong Li   +5 more
doaj   +2 more sources

False negative results from using common PCR reagents

BMC Research Notes, 2011
Background The sensitivity of the PCR reaction makes it ideal for use when identifying potentially novel viral infections in human disease. Unfortunately, this same sensitivity also leaves this popular technique open to potential contamination with ...
Atwood Allison A, Cummings Jessica L, Sobek Kathryn M, Bacich Dean J, O'Keefe Denise S   +4 more
doaj   +2 more sources

False-negative reactions to the comparative intradermal tuberculin test for bovine tuberculosis

Pesquisa Veterinaria Brasileira, 2017
No Brasil, segundo o Programa Nacional de Controle e Erradicacao da Brucelose e Tuberculose Animal (PNCEBT), do Ministerio da Agricultura, Pecuaria e Abastecimento (MAPA), os testes de rotina para o diagnostico de tuberculose bovina sao o teste cervical ...
Flábio Araujo, Walter Lilenbaum, Marcio R Silva   +2 more
exaly   +2 more sources

Solid phase capture method for the specific amplification of microbial nucleic acids—avoidance of false-positive and false-negative reactions

Molecular and Cellular Probes, 1991
DNA amplification assays such as the polymerase chain reaction are being developed for the amplification of small quantities of microbial nucleic acids. These assays offer the potential for a great deal of sensitivity. However, the high level of sensitivity increases the likelihood of cross-contamination of amplified products and the generation of ...
R H, Yolken, A M, Sierra-Honigmann, R P, Viscidi   +2 more
openaire   +3 more sources

Understanding the cause of false negative β-d-glucuronidase reactions in culture media containing fermentable carbohydrate

Letters in Applied Microbiology, 2010
C. R. Fricker, Paul S. Warden, B. J. Eldred   +2 more
exaly   +2 more sources

Postoperative cerebral air embolism with delayed abnormal brain MRI findings

eNeurologicalSci, 2021
Cerebral air embolism (CAE) is a rare but well-known complication resulting from invasive medical procedures; however, previous studies have not examined the postoperative longitudinal MRI changes in CAE.
Yuwa Oka, Koji Tsuzaki, Mayu Kamei, Akihiro Kikuya, Toshiaki Hamano   +4 more
doaj   +1 more source

False negative point‐of‐care urine pregnancy tests in an urban academic emergency department: a retrospective cohort study

Journal of the American College of Emergency Physicians Open, 2021
Study objective To determine the prevalence of false negative point‐of‐care (POC) urine pregnancy tests among emergency department (ED) patients and among those with abdominal pain or vaginal bleeding.
Sarah Kleinschmidt, Julianne N. Dugas, Kerrie P Nelson, James A Feldman   +3 more
doaj   +1 more source