Search results for "SPAN"

Bibliographia medica hispanica, 1475-1950. Vol. VIII, Revistas, 1736-1950

1990

Las revistas constituyen uno de los géneros documentales de la bibliografía médica que plantea mayores dificultades, sobre todo cuando se trata de las publicadas durante más de dos siglos. Los cambios y variantes de los títulos, la pervivencia a lo largo del tiempo y sus interrupciones, la continuación de unas revistas por otras, su fusión y la ausencia de normalización tal como hoy la entendemos son fenómenos que conducen a un auténtico laberinto que no resulta nada sencillo desentrañar. En el caso del periodismo médico español, las dificultades se ven acrecentadas por la continua destrucción de las colecciones de instituciones y profesionales, debido a la falta de conciencia casi general …

Bibliographia chemica hispanica, 1482-1950. Vol. II, Libros y folletos, 1801-1900

1987

El inventario de los libros y folletos está ordenado alfabéticamente por autores (el primero, en el caso de haber varios). Las obras correspondientes al mismo autor siguen un orden cronológico según la fecha de publicación y, si hay varias del mismo autor y año, un orden alfabético de títulos. El método de recogida de material ha sido la consulta de bibliotecas y de repertorios bibliográficos. En cada volumen se indica los que se han vaciado de modo sistemático, con las abreviaturas correspondientes. A ellos hay que añadir otros que solamente se han tenido en cuenta en ocasiones concretas, sobre todo en relación con ejemplares únicos o muy raros, complementados a veces por estudios especial…

Septal complex of the telencephalon of the lizardPodarcis hispanica. II. afferent connections

1997

The afferent connections to the septal complex were studied in the lizard Podarcis hispanica (Lacertidae) by means of a combination of retrograde and anterograde tracing. The results of these experiments allow us to classify the septal nuclei into three main divisions. The central septal division (anterior, lateral, dorsolateral, ventrolateral, and medial septal nuclei plus the nucleus of the posterior pallial commissure) receives a massive, topographically organized, cortical projection (medial, dorsal, and ventral areas) and widespread afferents from the tuberomammillary hypothalamus and the basal telencephalon. Moreover, it receives discrete projections from the dorsomedial anterior thal…

Amygdalostriatal projections in reptiles: A tract-tracing study in the lizardPodarcis hispanica

2004

Whereas the lacertilian anterior dorsal ventricular ridge contains unimodal sensory areas, its posterior part (PDVR) is an associative center that projects to the hypothalamus, thus being comparable to the amygdaloid formation. To further understand the organization of the reptilian cerebral hemispheres, we have used anterograde and retrograde tracing techniques to study the projections from the PDVR and adjoining areas (dorsolateral amygdala, DLA; deep lateral cortex, dLC; nucleus sphericus, NS) to the striatum in the lizard Podarcis hispanica. This information is complemented with a detailed description of the organization of the basal telencephalon of Podarcis. The caudal aspect of the d…

Interhemispheric connections through the pallial commissures in the brain ofPodarcis hispanicaandGallotia stehlinii(Reptilia, Lacertidae)

1990

The cells-of-origin and the mode and site of termination of the interhemispheric connections passing through the anterior and posterior pallial commissures in the telencephalon of two lizards (Podarcis hispanica and Gallotia stehlinii) were investigated by studying the anterograde and retrograde transport of unilaterally injected horseradish peroxidase. The commissural projections arise mainly from pyramidal cells in the medial, dorsomedial, and dorsal cortices (medial subfield). Additionally some non-pyramidal neurons in the medial and dorsal cortices contribute to the commissural system. Medial cortex neurons project to the contralateral anterior septum through the anterior pallial commis…

Neuronal circuitry in the medial cerebral cortex of lizards

1997

The medial cortex of lizards is a simple three-layered brain region displaying many characteristics which parallel the hippocampal fascia dentata of mammals. Its principal neurons form a morphologically diverse population, partly as a result of the prominent continuous growth of this nervous centre. By using the classical Golgi impregnation method we describe here the morphology of the principal neurons (8 types) and the short-axon interneurons (18 types) populating the medial cortex of Podarcis hispanica as well as the connections between them.

A Complete Description and Conservation Assessment of Riella affinis Howe & Underwood (Riellaceae, Sphaerocarpales) New to Continental Europe

2019

Riella affinis Howe & Underwood is a rare species that is thus far known from eight populations worldwide. Only half of these were recorded in the last 50 years and none were recollected since first reported. Study of a Spanish population of R. cossoniana Trab., recorded in 2002 from Las Lomas, Malaga province, revealed that it belongs to R. affinis. The correct identity of the populations, which had not been available for study, was already suggested by reproductive and ecological characteristics of the plants mentioned in the original publication. The three main lagoons from the Las Lomas endorheic system, where the plants had been recorded, were sampled and living plants of R. affinis we…

2014

Human papillomaviruses (HPV) are non-enveloped DNA tumor viruses that infect skin and mucosa. The most oncogenic subtype, HPV16, causes various types of cancer, including cervical, anal, and head and neck cancers. During the multistep process of infection, numerous host proteins are required for the delivery of virus genetic information into the nucleus of target cells. Over the last two decades, many host-cell proteins such as heparan sulfate proteoglycans, integrins, growth factor receptors, actin and the tetraspanin CD151 have been described to be involved in the process of infectious entry of HPV16. Tetraspanins have the ability to organize membrane microdomains and to directly influenc…

Afferents to the red nucleus in the lizardPodarcis hispanica: Putative pathways for visuomotor integration

1999

The afferents to the red nucleus from visual and nonvisual forebrain centers have been investigated in the lizard Podarcis hispanica by using both retrograde and anterograde transport of tracers. Because the red nucleus constitutes a key structure in the limb premotor system, these sensory afferents probably are involved in visuomotor and other forms of sensorimotor integration. After tracer injections aimed at the red nucleus, retrograde labeling was found in the reticular thalamus, the subthalamus, the nucleus of the posterior commissure, as well as in two retinorecipient nuclei, namely, the ventral lateral and pretectal geniculate nuclei, where labeled cells are especially abundant. Thes…

Easy Rawlins' Identity: a Unique African American Male Detective

2011

Fotografía: "Detective", Untipografico.