Results 21 to 30 of about 2,193 (114)

Secuenciación del gen de la Sialidasa de Trypanosoma rangeli en aislados con y sin actividad enzimática, de la provincia de Panamá Oeste, República de Panamá

open access: yesVisión Antataura, 2021
Trypanosoma rangeli es un hemoparásito no patógeno, frecuente en humanos y otros mamíferos. La forma epimastigota de T. rangeli expresan una enzima con actividad de sialidasa (SA), la cual es diferente a la trans-sialidasa encontrada en T. cruzi.
Tania Gómez   +4 more
doaj  

Placental insufficiency markers to assess the risk of non‐chromosomal genetic conditions in early‐onset fetal growth restriction

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 4, Page 492-499, April 2026.
ABSTRACT Objectives To assess the value of placental insufficiency markers for estimating the risk of genetic anomalies in fetuses with isolated early‐onset fetal growth restriction (FGR), defined as an estimated fetal weight ≤ 3rd percentile diagnosed ≤ 28 + 6 weeks' gestation.
M. Armengol‐Alsina   +17 more
wiley   +1 more source

Using miniaturized laboratory equipment and DNA barcoding to improve conservation genetics training and identify illegally traded species

open access: yesConservation Biology, Volume 40, Issue 2, April 2026.
Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva   +9 more
wiley   +1 more source

Muerte súbita y secuenciación de siguiente generación. Revisión bibliográfica

open access: yesRevista de Ciencias Forenses de Honduras, 2023
Introducción: la muerte súbita se trata de un evento fatal e imprevisible. Realizada la autopsia y estudios complementarios, en ausencia de otros hallazgos que expliquen la causa de muerte, se clasifica como muerte súbita inexplicada.
Lucio Alfonso Chirillano   +2 more
doaj   +1 more source

Secrets within stems: The cryptic Apodanthes caseariae (Apodanthaceae), a rare neotropical holoendoparasite

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 2, Page 385-400, March 2026.
Holoendoparasites are extremely rare plants that live entirely hidden inside their hosts, with only flowers and fruits visible. We studied Apodanthes caseariae, found in central and South America, parasitizing Casearia sylvestris. Little is known about its life cycle.
Jessica A. Ramírez‐Ramírez   +4 more
wiley   +1 more source

Evaluation of new Toxocara canis chimeric antigens as an alternative to conventional TES-Ag for anti-Toxocara antibodies detection

open access: yesHeliyon, 2022
Human toxocariasis is one of the neglected helminthiases and it is caused by the zoonotic roundworm species Toxocara canis and Toxocara cati. Diagnosis of human toxocariasis is based on the combination of clinical, parasitological, and epidemiological ...
Jairo A. Mesa-Arango   +5 more
doaj   +1 more source

Amphibians' Expansion to Record Elevations Influences Chytrid (Batrachochytrium dendrobatidis) Infection Dynamics

open access: yesBiotropica, Volume 58, Issue 2, March 2026.
Peruvian frogs underwent a climate‐driven range expansion into deglaciating mountains, exposing themselves and their fungal pathogen Batrachochytrium dendrobatidis (Bd) to challenging new thermal environments. Bd has dispersed extensively in these new habitats, and elevation may mediate the apparent sublethal impacts of infection for frogs.
Emma Steigerwald   +6 more
wiley   +1 more source

Modelamiento a través de la programación lineal entera mixta del problema de programación de operaciones en el taller de trabajo

open access: yesRevista UIS Ingenierías, 2003
En la búsqueda de la competitividad las empresas han acudido al área de Dirección de Operacionesque ofi'ece múltiples oportunidades si es gestionada adecuadamente.
Myriam Leonor Niño López
doaj  

Primer análisis filogenético de Ehrlichia canis en perros y garrapatas de México. Estudio preliminar

open access: yesRevista Mvz Cordoba, 2016
RESUMEN Objetivos. Caracterizar filogenéticamente Ehrlichia canis a partir de perros naturalmente infectados y sus garrapatas, mediante PCR y secuenciación del gene 16SrRNA para compararlos con diferentes aislados encontrados en el continente Americano.
Carolina G. Sosa-Gutiérrez   +3 more
doaj   +1 more source

Community‐driven variations in snow algae color modulate snow albedo reduction

open access: yesNew Phytologist, Volume 249, Issue 4, Page 1739-1752, February 2026.
Summary Snow algae blooms visibly alter snow color and surface energy balance, yet the biological basis of this variability remains unclear. We investigated how pigment composition and community structure shape the optical properties of snow algae blooms of distinct colors – red, orange, and green – co‐occurring within the same snowfield in Glacier ...
Pablo Almela   +4 more
wiley   +1 more source

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