Results 21 to 30 of about 112,587 (303)

Identification and characterization of Aeromonas veronii and Vibrio cholerae from naturally diseased red swamp crayfish (Procambarus clarkia)

open access: yesAquaculture Reports, 2023
A large number of red swamp crayfish (Procambarus clarkia) died at a crayfish breeding farm in Tianjin. Two dominant bacterial strains were isolated from the hepatopancreas of diseased crayfish and named PCG1 and PCG2, respectively.
Yufeng Su   +4 more
doaj   +1 more source

Acute toxicity study and phytochemical screening of Pterocarpus marsupium heartwood

open access: yesNational Journal of Physiology, Pharmacy and Pharmacology, 2022
Background: Conventionally, Ayurvedic herbs are being used to treat various diseases. These medicinal compounds have to be evaluated for their safety and presence of therapeutic compounds for the clinical application.
Narendar Koyagura   +2 more
doaj   +1 more source

Wild bee toxicity data for pesticide risk assessments [PDF]

open access: yes, 2019
Pollination services are vital for agriculture, food security and biodiversity. Although many insect species provide pollination services, honeybees are thought to be the major provider of this service to agriculture. However, the importance of wild bees
Lewis, Kathleen, Tzilivakis, John
core   +2 more sources

Estimate the median lethal dose using the exponential model

open access: yesJournal of Physics: Conference Series, 2021
Abstract In this research, biological assays for testing toxins in the disinfection jungles Roanstar are studied on a group of fish. The dose-response relationship was estimated using an exponential model, applied the MLE method to estimate the parameters of the exponential distribution.
Iden Hasan Hussein, Haneen Jawad Abood
openaire   +1 more source

Quantification of the Relative Virulence of White Spot Syndrome Virus (WSSV) in the Penaeid Shrimps Litopenaeus vannamei (Boone, 1931) and Farfantepenaeus duorarum (Burkenroad, 1939) by Quantitative Real Time PCR

open access: yesAnnals of Tropical Research, 2012
The relative virulence of the China isolate of white spot syndrome virus (WSSV-CN) in the penaeid shrimps Litopenaeus vannamei and Farfantepenaeus duorarum, was assessed by a comparison of 7-d median lethal dose (LD50), survival curve, and mean lethal ...
Rey J. dela Calzada, Jeffrey M. Lotz
doaj   +1 more source

Lethal Dose of Calcium Bentonite in Wistar Rats

open access: yesAlthea Medical Journal, 2021
Background: Calcium bentonite is a type of clay produced by a devitrification of volcanic ash which is often used as a traditional medicine to absorb toxins and waste products of metabolism.
Dwika Audiyananda   +2 more
doaj   +1 more source

Interference of the T cell and antigen-presenting cell costimulatory pathway using CTLA4-Ig (abatacept) prevents Staphylococcal enterotoxin B pathology [PDF]

open access: yes, 2017
Staphylococcal enterotoxin B (SEB) is a bacterial superantigen that binds the receptors in the APC/T cell synapse and causes increased proliferation of T cells and a cytokine storm syndrome in vivo.
Carter, Alun J   +10 more
core   +2 more sources

Evaluation of lethality and cytotoxic effects induced by Naja ashei (large brown spitting cobra) venom and the envenomation-neutralizing efficacy of selected commercial antivenoms in Kenya

open access: yesToxicon: X, 2022
Neutralization of lethality in mice model at the preclinical level has been established by the World Health Organization as the gold standard for the evaluation of antivenom efficacy.
Ernest Z. Manson   +4 more
doaj   +1 more source

Risks for public health related to the presence of tetrodotoxin (TTX) and TTX analogues in marine bivalves and gastropods [PDF]

open access: yes, 2017
Peer reviewedPublisher ...
EFSA Panel on Contaminants in the Food Chain (CONTAM)
core   +1 more source

Combined immunosuppressive therapy with low dose FK506 and antimetabolites in rat allogeneic heart transplantation [PDF]

open access: yes, 1994
Following rat heterotopic heart allotransplantation, low to lethal doses of the antimetabolites mizoribine (MIZ), RS-61443 (RS), and AZA were given alone or in combination with subtherapeutic doses of FK506 (0.04 mg/kg/day) for 14 days after ...
Fujisaki, S   +6 more
core   +1 more source

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