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Ultrastructure and histology of organogenesis induced from shoot tips of maize (Zea mays, Poaceae)
(Rev. biol. trop vol.57 supl.1 San José nov. 2009, 2009-11)
Shoot tips of maize (Zea mays L.) were cultured on Murashige and Skoog medium supplemented with 2 mg/l BA +1 mg/l 2,4-D +40 mg/l, to investigate phases of ontogenetic development. The study used light microscopy as well ...
Cáncer de mama en mujeres jóvenes. Características clínicas y patológicas.
(Revista Médica de la Universidad de Costa Rica. Volumen 4, número 2, artículo 7., 2010-10)
El presente estudio tiene como objetivo caracterizar los carcinomas invasores de la
glándula mamaria de una cohorte de 72 mujeres menores de 50 años, diagnosticadas
durante el año 2006 en un centro de salud capitalino ...
An MTT-based method for the in vivo quantification of myotoxic activity of snake venoms and its neutralization by antibodies
(1993-05)
The reduction of the tetrazolium compound MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide) was used as the basis for the development of a simple method for the quantitative estimation of metabolically ...
Helicobacter pylori in a Costa Rican dyspeptic patient population
(1994-03)
Gastric biopsies from 65 Costa Rican dyspeptic patients were investigated for the presence ofHelicobacter pylori DNA by polymerase chain reaction (PCR) amplification of 16S rRNA sequences. Both frozen and paraffin-embedded ...
Human Papiloma Virus in lung cancer tissue. Experience at the Calderon Guardia Hopsital
(2012-11-20)
Background: The epidemiology of lung cancer, a major cause of morbidity throughout the world and the leading cause of mortality among adult men and women, has changed substantially in the past few years. Some of these ...
Body distribution of Bothrops asper (terciopelo) snake venom myotoxin and its relationship to pathological changes
(1988)
The distribution of 125I-labelled Bothrops asper myotoxin following i.m. and i.v. injections was studied in mice. After i.m. administration the toxin was concentrated in the injected gastrocnemius muscle, with relatively ...
Experimental myonecrosis induced by the venoms of South American Micrurus (coral snakes)
(1992)
Venoms from 11 taxa of Micrurus (coral snakes) from Brazil and Colombia were tested for myotoxic activity in mice. All venoms, except that of M. surinamensis, induced myotoxicity as judged by the increase in plasma creatine ...
Efectos proteolitico, hemorragico y mionecrotico de los venenos de serpientes costarricenses de los generos Bothrops, Crotalus y Lachesis
(1980)
We studied the proteolytic, hemorrhagic and myonecrotic activities of ten Costa Rican species of snakes from the family Viperidae. All of them showed these three activities but we did not observe any correlation between ...
Identificación histológica de Helicobacter pylori por los métodos de tinción de Warthin-Starry y Gimenez en biopsias gástricas
(1996)
Forty-nine patients (20 men and 29 women)
were investigated for Helicobacter pylori tinfection.
All patients had dyspeptic problems
and underwent gastroscopy at the Max Per-
Alta Hospital, Cartago. They were examibed
by ...
Isolation from a polyvalent antivenom of antibodies to a myotoxin in Bothrops asper snake venom
(1985)
Antibodies against Bothrops asper rmyotoxin were purified from a polyvalent antivenom by affinity chromatography . These antibodies neutralized most of the myotoxic activity of crude B. asper venom, as judged by histologic ...