Results 31 to 40 of about 12,961 (317)

New records of three Latrodectus species found in Khorasan province (Araneae: Theridiidae) [PDF]

open access: yesIranian Journal of Animal Biosystematics, 2005
Three Threidiid spiders of the genus Latrodectus occur in Khorasan province: L.tredecimguttatus, L.pallidus, L.dahli. The three are described, their diagnostic features are illustrated, and taxonomic notes are given where possible.
O. Mirshamsi
doaj   +1 more source

Completeness of notifications of accidents involving venomous animals in the Information System for Notifiable Diseases: a descriptive study, Brazil, 2007-2019

open access: yesEpidemiologia e Serviços de Saúde, 2023
Objective: to describe the completeness of notifications of accidents involving venomous animals held on the Notifiable Health Conditions Information System (SINAN), in Brazil and its macro-regions, from 2007 to 2019.
Mariana Brito   +3 more
doaj   +2 more sources

Autonomous Hydrogel Actuators Programmed by Endogenous Biochemical Logic for Dual‐Stage Morphing and Drug Release

open access: yesAdvanced Materials, EarlyView.
A 3D‐printed BSA–PEGDA bilayer actuator performs biochemical logic, bending autonomously in acid and releasing its drug payload only when both acid and pepsin are present. This dual‐stage, enzyme‐gated mechanism enables autonomous catch‐and‐release motion and controlled gastric drug delivery, representing a programmable soft material powered by ...
Yuchen Liu   +3 more
wiley   +1 more source

The lethal toxin from Australian funnel-web spiders is encoded by an intronless gene. [PDF]

open access: yesPLoS ONE, 2012
Australian funnel-web spiders are generally considered the most dangerous spiders in the world, with envenomations from the Sydney funnel-web spider Atrax robustus resulting in at least 14 human fatalities prior to the introduction of an effective anti ...
Sandy Steffany Pineda   +3 more
doaj   +1 more source

Special Adaptations of Orb Weavers and Prey [PDF]

open access: yes, 1986
Orb weaving spiders have devised both webs and special devices for capturing prey. The prey have also evolved mechanisms for eluding spiders and for living with them.
Dorris, Peggy Rae
core   +2 more sources

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

open access: yesThe Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

A Novel Hyaluronidase from Brown Spider (Loxosceles intermedia) Venom (Dietrich's Hyaluronidase): From Cloning to Functional Characterization [PDF]

open access: yes, 2013
Loxoscelism is the designation given to clinical symptoms evoked by Loxosceles spider's bites. Clinical manifestations include skin necrosis with gravitational spreading and systemic disturbs. the venom contains several enzymatic toxins.
Chaim, Olga Meiri   +9 more
core   +4 more sources

New craniodental materials of Falcarius utahensis (Theropoda: Therizinosauria) reveal patterns of intraspecific variation and cranial evolution in early coelurosaurians

open access: yesThe Anatomical Record, EarlyView.
Abstract Despite documented ecomorphological shifts toward an herbivorous diet in several coelurosaurian lineages, the evolutionary tempo and mode of these changes remain poorly understood, hampered by sparse cranial materials for early representatives of major clades. This is particularly true for Therizinosauria, with representative crania best known
William J. Freimuth, Lindsay E. Zanno
wiley   +1 more source

Are ticks venomous animals? [PDF]

open access: yes, 2017
[Introduction]: As an ecological adaptation venoms have evolved independently in several species of Metazoa. As haematophagous arthropods ticks are mainly considered as ectoparasites due to directly feeding on the skin of animal hosts. Ticks are of major
Cabezas-Cruz, Alejandro   +1 more
core   +1 more source

Student perspectives on AI‐supported formative assessment in pharmacology

open access: yesBritish Journal of Clinical Pharmacology, EarlyView.
Abstract Aims High‐quality feedback is crucial for helping medical students understand and apply core concepts of pharmacology, yet personalized feedback is resource‐intensive to produce. Artificial intelligence (AI) offers a potential solution, but little is known about students' perspectives on AI‐generated feedback.
Jon Andsnes Berg   +6 more
wiley   +1 more source

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