Results 181 to 190 of about 1,559,915 (394)

Silesaurid (Archosauria: Dinosauriformes) remains from the base of the Dockum Group (Late Triassic: Otischalkian) of Texas provide new insights to the North American record of dinosauriforms

open access: yesThe Anatomical Record, EarlyView.
Abstract Silesaurids (Archosauria: Dinosauriformes) are found in Middle to Upper Triassic deposits across Pangea, but few stratigraphic sections record the evolution of the group in one geographic area over millions of years. Here, we describe silesaurid remains from the oldest of the Upper Triassic stratigraphic sequence from the base of the Dockum ...
Frederick B. Tolchard   +2 more
wiley   +1 more source

The lower jaw of Devonian ray‐finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology

open access: yesThe Anatomical Record, EarlyView.
Abstract Actinopterygii is a major extant vertebrate group, but limited data are available for its earliest members. Here we investigate the morphology of Devonian actinopterygians, focusing on the lower jaw. We use X‐ray computed tomography (XCT) to provide comprehensive descriptions of the mandibles of 19 species, which span the whole of the Devonian
Ben Igielman   +11 more
wiley   +1 more source

Cutting‐Edge Achievements of Inner Ear Drug Delivery Systems

open access: yesAdvanced NanoBiomed Research
The intricate physiological structure of the inner ear presents challenges for traditional medication treatment strategies, including systemic adverse responses, trouble penetrating the blood–labyrinth barrier, and low local cochlear concentration ...
Hui Zhang   +4 more
doaj   +1 more source

Intraspecific variation of cochlear morphology in bowhead and beluga whales

open access: yesThe Anatomical Record, EarlyView.
Abstract The bony labyrinth of the petrosal bone, a distinctive feature of mammal skulls, is often identified in micro‐computed tomography imaging to infer species' physiological and ecological traits. When done as part of a comparative study, one individual specimen is normally considered representative of a species, and intraspecific variation is ...
John Peacock, J. G. M. Thewissen
wiley   +1 more source

Are there morpho‐acoustic patterns of adaptation in nonhuman primate ears? Testing the role of ecology and habitat in shaping ear morphology and function

open access: yesThe Anatomical Record, EarlyView.
Abstract Analysis of the variation in the bony structures of the inner and middle ear provides critical insights into functional morphology, as well as adaptive morphology across primates. In this study, we investigated whether ear morphology patterns are related to the ecological characteristics of species and their habitats to test two acoustic ...
Myriam Marsot   +4 more
wiley   +1 more source

M/G‐Ratio‐Tuned Calcium Alginate Hydrogel Microcarrier for Controlled Delivery of Adeno‐Associated Virus for Gene Therapy

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT This paper proposes the controlled release of adeno‐associated virus (AAV) by polymer mesh structures of alginate hydrogel microbeads (gel‐beads). The polymer mesh structure of alginate hydrogel can be controlled by adjusting the number of cross‐linking points depending on the molecular structure (M/G ratio) of the alginate hydrogel.
Aiki Hioki   +3 more
wiley   +1 more source

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