Results 41 to 50 of about 58,954 (218)

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

The Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi, Kamila L. N. Bandeira, Roberta Veronese do Amaral, Arthur S. Brum, Rafael C. da Silva, Valéria Gallo   +5 more
wiley   +1 more source

Estructuras y funciones celulares: presentación de una estrategia pedagógica para generar un acercamiento a la investigación biológica

Revista Ciencias Biomédicas, 2011
INTRODUCCIÓN: la biología celular actual busca explicar las estructuras, propiedades y funciones celulares normales y patológicasdesde el punto de vista molecular.
Malambo- García Dacia
doaj  

GRK2-mediated AKT activation controls cell cycle progression and G2 checkpoint in a p53-dependent manner

Cell Death Discovery
Cell cycle checkpoints, activated by stressful events, halt the cell cycle progression, and prevent the transmission of damaged DNA. These checkpoints prompt cell repair but also trigger cell death if damage persists.
Verónica Rivas, Teresa González-Muñoz, Ángela Albitre, Vanesa Lafarga, Cristina Delgado-Arévalo, Federico Mayor, Petronila Penela   +6 more
doaj   +1 more source

Early evolution of the gular musculature and its innervation in ray‐finned fishes

The Anatomical Record, EarlyView.
Abstract Gular muscles are an important but often overlooked component of cranial anatomy in bony fishes. They are located on the ventral surface of the head and are derived from the mandibular and hyoid arches. We present a comprehensive review of the gular musculature and its innervation across early diverging actinopterygian lineages. By integrating
Aléssio Datovo, Paulo Presti, George Vita, Murilo N. L. Pastana, Luiz A. W. Peixoto   +4 more
wiley   +1 more source

Definiciones de acceso a recursos genéticos en la legislación colombiana y sus efectos en la investigacion científica

Acta Biológica Colombiana, 2016
La aplicación de las definiciones sobre Acceso a Recursos Genéticos (ARG) contenidas en diversas normas legislativas nacionales o comunitarias, pueden afectar la investigación científica (no-comercial y comercial).
Alejandro Chaparro-Giraldo
doaj   +1 more source

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

Balancing mechanics and metabolism: Elevational variation in the microanatomy of hummingbird flight muscle

The Anatomical Record, EarlyView.
Abstract Factors varying along elevational gradients impose strong aerodynamic and physiological constraints on powered flight, yet the internal microanatomical variation associated with elevational context in animals under such conditions remains poorly understood.
Juan Camilo Ríos‐Orjuela, Juliana Novoa‐Páramo, Maria Juliana Villalba Patiño, Zayra Viviana Garavito‐Aguilar, Alejandro Rico‐Guevara, Carlos Daniel Cadena   +5 more
wiley   +1 more source

One‐Pot Synthesis of a Small Synthetic Ligand for Antibody Purification

Biotechnology and Bioengineering, EarlyView.
One‐pot liquid‐phase synthesis of the synthetic ligand B1Al2A2 enables controllable ligand density and efficient capture of IgG and IgY with high recovery and purity, streamlining small‐ligand affinity purification workflows. ABSTRACT The development of synthetic affinity ligands offers a cost‐effective alternative to traditional biological ligands ...
Carolina Mota Natal, Catarina Domingos, André Nascimento, José Mendes, Afonso B. Ruiz, Ana Margarida Gonçalves Carvalho Dias, Luisa M. Ferreira, Cristina Peixoto, Ana Cecília Afonso Roque   +8 more
wiley   +1 more source

Compensatory activity of the PC-ME1 metabolic axis underlies differential sensitivity to mitochondrial complex I inhibition

Nature Communications
Deficiencies in the electron transport chain (ETC) lead to mitochondrial diseases. While mutations are distributed across the organism, cell and tissue sensitivity to ETC disruption varies, and the molecular mechanisms underlying this variability remain ...
Lucia del Prado, Myriam Jaraíz-Rodríguez, Mauro Agro, Marcos Zamora-Dorta, Natalia Azpiazu, Manuel Calleja, Mario Lopez-Manzaneda, Jaime de Juan-Sanz, Alba Fernández-Rodrigo, José A. Esteban, Mònica Girona, Albert Quintana, Eduardo Balsa   +12 more
doaj   +1 more source

Enzymes Involved in the Biosynthesis of Arginine from Ornithine in Maritime Pine (Pinus pinaster Ait.)

Plants, 2020
The amino acids arginine and ornithine are the precursors of a wide range of nitrogenous compounds in all living organisms. The metabolic conversion of ornithine into arginine is catalyzed by the sequential activities of the enzymes ornithine ...
José Alberto Urbano-Gámez, Jorge El-Azaz, Concepción Ávila, Fernando N. de la Torre, Francisco M. Cánovas   +4 more
doaj   +1 more source