Results 11 to 20 of about 144,715 (261)

Weight of evidence approach using a TK gene mutation assay with human TK6 cells for follow-up of positive results in Ames tests: a collaborative study by MMS/JEMS

Genes and Environment, 2021
Background Conflicting results between bacterial mutagenicity tests (the Ames test) and mammalian carcinogenicity tests might be due to species differences in metabolism, genome structure, and DNA repair systems. Mutagenicity assays using human cells are
Manabu Yasui, Takayuki Fukuda, Akiko Ukai, Jiro Maniwa, Tadashi Imamura, Tsuneo Hashizume, Haruna Yamamoto, Kaori Shibuya, Kazunori Narumi, Yohei Fujiishi, Emiko Okada, Saori Fujishima, Mika Yamamoto, Naoko Otani, Maki Nakamura, Ryoichi Nishimura, Maya Ueda, Masayuki Mishima, Kaori Matsuzaki, Akira Takeiri, Kenji Tanaka, Yuki Okada, Munehiro Nakagawa, Shuichi Hamada, Akihiko Kajikawa, Hiroshi Honda, Jun Adachi, Kentaro Misaki, Kumiko Ogawa, Masamitsu Honma   +29 more
doaj   +1 more source

Comparative scores of ABO and Rh hemagglutination reactions

Medical Journal of Dr. D.Y. Patil Vidyapeeth, 2022
Background: Blood group determination is done by the slide test and tube test. Grading/scoring of hemagglutination reactions is performed through the naked eye and microscopy to detect spurious (false positive and negative) reactions.
Prashant Devidas Khuje, Mahesh S Karandikar, Bharti U Sable   +2 more
doaj   +1 more source

In vitro diagnostics of coronavirus disease 2019: Technologies and application

Journal of Microbiology, Immunology and Infection, 2021
Laboratory-based diagnostic measures including virological and serological tests are essential for detecting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
Chih-Cheng Lai, Cheng-Yi Wang, Wen-Chien Ko, Po-Ren Hsueh   +3 more
doaj   +1 more source

Delayed positivity of serological reactions in secondary syphilis against the background of severe HIV-induced immunosuppression [PDF]

Vestnik Dermatologii i Venerologii, 2023
In recent decades, there has been an increase in syphilis associated with HIV infection cases, especially among men who have sex with men. The global prevalence of syphilitic infection among people living with HIV exceeds population rates.
Sergey V. Prozherin, Anzhelika S. Podymova   +1 more
doaj   +1 more source

False negative polymerase chain reaction on cerebrospinal fluid samples in tuberculous meningitis [PDF]

Journal of Neurology, Neurosurgery & Psychiatry, 1999
There have been few studies in the literature concerned solely with the use of the polymerase chain reaction (PCR) to identify Mycobacterium tuberculosis DNA directly from CSF.1-4 These studies suggest that in some cases, PCR may be more sensitive than culture; however, in the largest study, performed …
D M, Gascoyne-Binzi, P M, Hawkey
openaire   +2 more sources

Problems Encountered with Nested PCR to Diagnosis of Phytoplasmas

Majallah-i ḥifāẓat-i giyāhān, 2016
Introduction: Phytoplasmas are phytopathogenic bacteria without cell walls that can be found in plant phloem, have been found associated with numerous diseases of plants worldwide.
C. Moslemkhani, S. Baghaee Ravari, P. Khodaygan   +2 more
doaj   +1 more source

Debates on the Use of Deception in Psychology Research

Psikoloji Çalışmaları, 2023
Deception is often used in scientific research as it is thought to contribute to the research process. Deception basically occurs when participants are given false or incomplete information about the purpose, content, or processes of a study.
Ayşe Tuna
doaj   +1 more source

High-throughput Plasmodium falciparum hrp2 and hrp3 gene deletion typing by digital PCR to monitor malaria rapid diagnostic test efficacy

eLife, 2022
Most rapid diagnostic tests for Plasmodium falciparum malaria target the Histidine-Rich Proteins 2 and 3 (HRP2 and HRP3). Deletions of the hrp2 and hrp3 genes result in false-negative tests and are a threat for malaria control.
Claudia A Vera-Arias, Aurel Holzschuh, Colins O Oduma, Kingsley Badu, Mutala Abdul-Hakim, Joshua Yukich, Manuel W Hetzel, Bakar S Fakih, Abdullah Ali, Marcelo U Ferreira, Simone Ladeia-Andrade, Fabián E Sáenz, Yaw Afrane, Endalew Zemene, Delenasaw Yewhalaw, James W Kazura, Guiyun Yan, Cristian Koepfli   +17 more
doaj   +1 more source

Research of the Real Time PCR method for detection and identification phytoplasmas on grapevine

RUDN Journal of Agronomy and Animal Industries, 2015
For the detection and identification of Candidatus Phytoplasma vitis Flavescence doree - the yellowing grape quarantine pest for the territory of Russia and Candidatus Phytoplasma solani Bois noir - pathogen of blackening crust grape was used one of the ...
G N Matyashova, V G Zaets
doaj   +1 more source

False positivity of non-targeted infections in malaria rapid diagnostic tests: the case of human african trypanosomiasis. [PDF]

PLoS Neglected Tropical Diseases, 2013
BACKGROUND: In endemic settings, diagnosis of malaria increasingly relies on the use of rapid diagnostic tests (RDTs). False positivity of such RDTs is poorly documented, although it is especially relevant in those infections that resemble malaria, such ...
Philippe Gillet, Dieudonné Mumba Ngoyi, Albert Lukuka, Viktor Kande, Benjamin Atua, Johan van Griensven, Jean-Jacques Muyembe, Jan Jacobs, Veerle Lejon   +8 more
doaj   +1 more source