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Now showing items 8259-8278 of 13511
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Neutralización del efceto hemorrágico inducido por veneno Bothrops asper (Serpentes: Viperidae) por extractos de las plantas tropicales
(Universidad Nacional (Costa Rica), 1999)Organic extracts representing 48 species included in 30 families of Costa Rican tropical plants were evaluated for their hability to neutralize hemorrhagic acfivity lnduced by the venom of the snake Bothrops aspero Abioassay ... -
Neutralizing antibodies against vesicular stomatitis viruses (serotypes New Jersey and Indiana) in horses in Costa Rica
(AAVLD, 2002-09-01)Serum samples were collected from domestic horses in 4 different regions of Costa Rica to detect antibodies against vesicular stomatitis viruses, serotypes New Jersey (VSV-NJ) and Indiana (VSV-IN). A total of 214 samples ... -
Neutrophils as Trojan Horse vehicles for Brucella abortus macrophage infection
(Universidad Nacional, Costa Rica, 2019-05-07)Brucella abortus is a stealthy intracellular bacterial pathogen of animals and humans. This bacterium promotes the premature cell death of neutrophils (PMN) and resists the killing action of these leukocytes. B. abortus-infected ... -
Neutrophils dampen adaptive immunity in Brucellosis
(American Society For Microbiology, 2019-04-23)Brucella organisms are intracellular stealth pathogens of animals and humans. The bacteria overcome the assault of innate immunity at early stages of an infection. Removal of polymorphonuclear neutrophils (PMNs) at the ... -
Neutrophils exert a suppressive effect on Th1 responses to intracellular pathogen Brucella abortus
(PLoS Pathogens, 2013-02-14)Polymorphonuclear neutrophils (PMNs) are the first line of defense against microbial pathogens. In addition to their role in innate immunity, PMNs may also regulate events related to adaptive immunity. To investigate the ... -
New advances in the method validation, extraction methods and measurement uncertainty for the determination of water-soluble hexavalent chromium in hydraulic cemen
(Elsevier, 2021)The quantification of Cr (VI) in the cement matrix is highly important, given the possibility of suffering illnesses including dermatitis, induced nasal carcinoma, and DNA damage produced by inhalation of and/or direct ... -
New advances in the method validation, extraction methods and measurement uncertainty for the determination of water-soluble hexavalent chromium in hydraulic cement
(Elsevier Ltd, 2021-04-20)The quantification of Cr (VI) in the cement matrix is highly important, given the possibility of suffering illnesses including dermatitis, induced nasal carcinoma, and DNA damage produced by inhalation of and/or direct ... -
New and common haplotypes shape genetic diversity in Asian tiger mosquito populations from Costa Rica and Panama
(Oxford University Press, 2015)The Asian tiger mosquito, Aedes albopictus (Skuse) (Diptera: Culicidae), is a vector of sev eral human pathogens. Ae. albopictus is also an invasive species that, over recent years, has expanded its range out of its native ... -
New Botanical Anxiolytics for Use in Companion Animals and Humans
(Springer (Alemania), 2017-11)As part of our ongoing research into botanical therapies for anxiety disorders, the neotropical vine Souroubea sympetala was chosen for study as a phytochemical discovery strategy focusing on rare Central American plant ... -
New Bruce-ladder multiplex PCR assay for the biovar typing of Brucella suis and the discrimination of Brucella suis and Brucella canis
(Veterinary Microbiology, 2011-06-11)Rapid and specific identification of Brucella suis at the biovar level is necessary because some of the biovars that infect animals are pathogenic for humans. None of the molecular typing methods described so far are ... -
New Bruce-ladder multiplex PCR assay for the biovar typing of Brucella suis and the discrimination of Brucella suis and Brucella canis
(Revista de Microbiología Veterinaria, 2011-06-28)Rapid and specific identification of Brucella suis at the biovar level is necessary because some of the biovars that infect animals are pathogenic for humans. None of the molecular typing methods described so far are ... -
New economies and innovation for developing countries: The case of Intel in Costa Rica
(Universidad Nacional, Costa Rica, 2002-05)The paper presents the specialisation patterns and indexes of the Central American economies based on the CAN database of CEPAL and reports on recent research on these issues and compare this “Intel Island” observation ... -
New insights into Kawah Ijen’s volcanic system from the wet volcano workshop experiment
(Geological Society London Special Publications, 2016-02-25)Volcanoes with crater lakes and/or extensive hydrothermal systems pose significant challenges with respect to monitoring and forecasting eruptions, but they also provide new opportunities to enhance our understanding of ... -
New insights into Neutrophil Extracellular Trap (NETs) formation from porcine neutrophils in response to bacterial infections
(MDPI, 2022-08-11)Actinobacillus pleuropneumoniae (A.pp, Gram negative) and Streptococcus (S.) suis (Gram positive) can cause severe diseases in pigs. During infection, neutrophils infiltrate to counteract these pathogens with phagocytosis ... -
New Record of the Small Hive Beetle, Aethina tumida, in Africanized Honey Bee Colonies in Costa Rica
(Bee World, 2019-02-27)The small hive beetle (SHB) Aethina tumida Murray (Insecta: Coleoptera: Nitidulidae) is a honey bee parasite native to sub-Saharan Africa (Hepburn & Radloff, 1998). It was first described by Murray in 1867. In 1996, SHBs ... -
New records of historical tsunamis obtained from Costa Rican newspapers
(American Geophysical Union, 2020-12-14)Costa Rica has few records of historical tsunamis, due to traditionally low populated coasts and moderate tsunami potential, among other reasons. As part of the writing of the first tsunami catalog of Costa Rica, the authors ... -
New records of Pteris (Pteridaceae) from the Neotropics
(Universidad Nacional (Costa Rica), 2014)As a result of studies on neotropical Pteris L., we report new records of Pteris albertiae and P. longifoliafrom Costa Rica; P. longipetiolulata from Costa Rica, Panama, Peru, Bolivia, and Venezuela; and P. muricatopedatafrom ... -
New records of snipe eels (Anguilliformes: Nemichthyidae) from the Pacific coast of lower Central America
(Marine Biodiversity Records vol.9 no.1 1-6 2016, 2016)Background: New records of occurrence of two snipe eels (Avocettina bowersii and Nemichthys scolopaceus), poorly known for the Pacific coast of Costa Rica and Panama are herein reported. Results: Specimens, 45 in total (28 ... -
New records, validated name, and redefinition in Azolla (Salviniaceae, Pteridophyta) from Costa Rica
(Universidad de Antioquia (Colombia), 2024)In studies of herbarium specimens and living material, we observed that several species in the genus Azolla Lam. are present in different wetlands of Costa Rica, which instigated the search for applicable names of each ... -
New sighting of seagrasses in the Eastern Tropical Pacific (Bahía Potrero, Costa Rica)
(Elsevier B.V., 2018-07-22)Seagrass meadows provide a multitude of ecosystem services, yet they are currently threatened and declining worldwide due to anthropogenic impacts. Current knowledge of seagrass presence in the Eastern Tropical Pacific ...