Results 61 to 70 of about 437,770 (246)

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Construction of three new Gateway® expression plasmids for Trypanosoma cruzi [PDF]

open access: yes, 2014
We present here three expression plasmids for Trypanosoma cruzi adapted to the Gateway® recombination cloning system. Two of these plasmids were designed to express trypanosomal proteins fused to a double tag for tandem affinity purification (TAPtag ...
Alonso, Victoria Lucia   +3 more
core   +4 more sources

Unraveling ovarian histology: The key morphological aspects that spur the development of the Fossa ovarii in equine

open access: yesThe Anatomical Record, EarlyView.
Abstract The equine ovary exhibits unique structural and developmental features that distinguish it from those of other domestic species, including the presence of an ovulation fossa and an inversion of cortical and medullary layers. This study aimed to investigate the morphostructural development of the equine fetal ovary, with particular emphasis on ...
Laura Ver Goltz   +5 more
wiley   +1 more source

¿Qué libro de texto elegir? La competencia visual en lasactividades con imágenes

open access: yesRevista Eureka sobre Enseñanza y Divulgación de las Ciencias, 2016
El objetivo de este artículo es aportar criterios para ayudar a la selección de libros de texto poniendo el foco en el análisis de la competencia gráfica o visual fomentada en sus actividades. Los criterios son puestos a prueba a través de la comparación
Asunción López-Manjón   +1 more
doaj  

Considerations about rodent models of binge eating episodes [PDF]

open access: yes, 2014
A binge eating episode is defined as an uncontrolled event of hyperphagia, in which people quickly eat a large amount of food while feeling a sense of loss of control over eating (Wolfe et al., 2009).
Garcia Romero, Guadalupe   +3 more
core   +2 more sources

Determining the timeline of gonadal and genital differentiation in male and female equine fetuses allows for early detection and intervention in malformations

open access: yesThe Anatomical Record, EarlyView.
Abstract Sexual differentiation in the equine fetus involves coordinated morphogenetic processes that shape both the gonads and the genital ducts. Although the formation of testes and ovaries has been relatively well documented, the temporal dynamics and morphometric patterns of the mesonephric (Wolffian) and paramesonephric (Müllerian) ducts remain ...
Tais Harumi de Castro Sasahara   +4 more
wiley   +1 more source

La identificación de especies y la nomenclatura científica a través del bodegón barroco

open access: yesRevista Eureka sobre Enseñanza y Divulgación de las Ciencias, 2013
Utilizando como referencia una relación de obras pictóricas enmarcadas dentro del género del bodegón o naturaleza muerta, y entre las que destacan numerosas obras del barroco español y flamenco, la presente experiencia educativa referida a la materia de ...
Román Belmonte Andújar
doaj  

Leer y escribir en un entorno digital: Prácticas innovadoras en la carrera de Ciencias Biológicas

open access: yesArbor: Ciencia, Pensamiento y Cultura, 2011
Se presenta una innovación llevada a cabo en el ingreso a la carrera de Ciencias Biológicas de la Universidad Nacional de Córdoba, Argentina. Esta propuesta revalorizó los entornos virtuales como medios que tienen como soporte la escritura, con la ...
Leticia Garcia, Nora Valeiras
doaj   +1 more source

Epigenetic consequences of interploidal hybridisation in synthetic and natural interspecific potato hybrids [PDF]

open access: yes, 2019
Interploidal hybridisation can generate changes in plant chromosome numbers, which might exert effects additional to the expected due to genome merger per se (i.e., genetic, epigenetic and phenotypic novelties).Wild potatoes are suitable to address this ...
Camadro, Elsa Lucila   +4 more
core   +1 more source

Much more than their fangs: Macroscopic anatomy of the brain of Bothrops moojeni Hoge 1966 (Squamata, Serpentes, Viperidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract Neuroanatomical research has progressed considerably in several vertebrate lineages, yet studies of reptilian brain morphology remain markedly underdeveloped. Here we provide the first description of macroscopic brain anatomy and its ontogeny in the viperid Bothrops moojeni, based on a sample of seven individuals.
Paula Araújo   +2 more
wiley   +1 more source

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