Buscar
Mostrando ítems 11-20 de 81
Evidence for Widespread Associations between Neotropical Hymenopteran Insects and Actinobacteria
(2017)
The evolutionary success of hymenopteran insects has been associated with complex physiological and behavioral defense mechanisms against pathogens and parasites. Among these strategies are symbiotic associations between ...
Papel de la bacteria endosimbionte Wolbachia en el control de enfermedades vectoriales: dengue, zika y chikunkunya
(2017)
Wolbachia es un género de bacterias perteneciente al orden Rickettsiales, que participa en diversas relaciones simbióticas con varios organismos, principalmente artrópodos y nematodos. Debido a su capacidad para inducir ...
Inflammation and uPAR-Expression in Colorectal Liver Metastases in Relation to Growth Pattern and Neo-adjuvant Therapy
(2015-08-14)
Proteolytic activity and inflammation in the tumour microenvironment affects cancer progression. In colorectal cancer (CRC) liver metastases it has been observed that three different immune profiles are present, as well ...
Evaluation of the expression of the oncogen C-ERBB-2/HER2 in advanced gastric cancer cases from Costa Rica
(2019-09-19)
Justification: The prevalence of gastric cancer (GC) with increased expression of the HER2 oncoprotein shows important variations worldwide. Incidence and mortality rates of GC in Costa Rica are among the highest in Latin ...
Characterization of Batrachochytrium dendrobatidis Inhibiting Bacteria from Amphibian Populations in Costa Rica
(2017)
Global amphibian declines and extinction events are occurring at an unprecedented rate. While several factors are responsible for declines and extinction, the fungal pathogen Batrachochytrium dendrobatidis (Bd) has been ...
Homoplasious colony morphology and mito-nuclear phylogenetic discordance among Eastern Pacific octocorals
(2016)
Octocorals are a diverse and ecologically important group of cnidarians. However, the phylogenetic relationships of many octocoral groups are not well understood and are based mostly on mitochondrial sequence data. In ...
Patogenicidad de tres hongos asociados a la muerte de plantas de fresa (Fragaria ananassa) y descripción ultraestructural del patosistema
Pathogenicity of fungi associated with strawberry plants (Fragaria ananassa) and ultrastructural description of the pathosystem
(2022-08-03)
Introducción. El cultivo de fresa (Fragaria
ananassa) es importante en Costa Rica
por su alta demanda como fruta fresca y para
elaboración de mermeladas. En 2015 empezaron
reportes de muerte de plantas, presumiblemen ...
Estudio fotomicrográfico de la genitalia y estructuras accesorias de las formas del género Pediculus Linneo 1758 asociadas al hombre y los monos del Nuevo Mundo (Anoplura: Phthiraptera)
Microphotographic study of genitalia and accessory structures of the forms of genus Pediculus Linnaeus 1758 associated Man and New World monkeys (Anoplura: Phthiraptera)
(2016)
En este trabajo se explora la ultraestructura de las setas genitales accesorias de la hembra y la estructura de la mayor sección esclerotizada de la genitalia del macho de Pediculus humanus L. Se utilizaron especímenes ...
Gastric cancer in the era of immune checkpoint blockade
(2019-09-24)
Gastric cancer (GC) is one of the most important malignancies worldwide because of its high incidence and mortality. The very low survival rates are mainly related to late diagnosis and limited treatment options. GC is the ...
Primera cita de Frankliniella grandecuriosa Johansen 1998 (Thripini: Thripinae: Thripidae) fuera de México
First record of Frankliniella grandecuriosa Johansen 1998 (Thripini: Thripinae: Thripidae) outside Mexico
(2015-08-28)
Se presenta el primer informe de una especie del grupo Frankliniella curiosa en Costa Rica. Se han recolectado recientemente dos especímenes de esta especie en la inflorescencia de una especie no determinada de Ageratum ...