Results 131 to 140 of about 5,621,877 (267)

Horizontal Gene Transfers from Bacteria to Entamoeba Complex: A Strategy for Dating Events along Species Divergence

open access: yesJournal of Parasitology Research, 2016
Horizontal gene transfer has proved to be relevant in eukaryotic evolution, as it has been found more often than expected and related to adaptation to certain niches.
Miguel Romero   +2 more
doaj   +1 more source

Self‐Sealing Microneedles Improve Precision and Reduce Reflux in Subretinal Cell Transplantation

open access: yesAdvanced Materials Technologies, EarlyView.
Ultrafine 49G microneedles enable subretinal delivery of induced pluripotent stem cell‐derived retinal pigment epithelial cells through a 50 µm outer diameter tip. Compared with conventional 38G microcannulas, these microneedles reduce cell suspension reflux in a rabbit model, highlighting the potential of microinvasive delivery instruments to improve ...
Jared Ching   +9 more
wiley   +1 more source

Multiobjective Codesign Optimization of a Planar Pneumatic Artificial Muscle‐Based Snake‐Like Robot for Enhanced Agility and Energy Efficiency

open access: yesAdvanced Robotics Research, EarlyView.
A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley   +1 more source

Chlamydia trachomatis: a model for intracellular bacterial parasitism

open access: yesJournal of Bacteriology
Chlamydia comprises a diverse group of obligate intracellular bacteria that cause infections in animals, including humans. These organisms share fascinating biology, including distinct developmental stages, non-canonical cell surface structures, and ...
Erin P. Smith, Raphael H. Valdivia
doaj   +1 more source

Intelligent Micro/Nanorobots for Targeted Interventional Therapy: From Bench to Clinic

open access: yesAdvanced Robotics Research, EarlyView.
Zirui Zhang et al. reviewed the application and challenges of mobile nanomachines in interventional therapy. By converting exogenous energy, including chemical, magnetic, optical, and ultrasonic sources, into mechanical forces, micro/nanorobots (MNRs) enable precise actuation at unprecedented scales. Evolving far beyond traditional drug delivery, these
Zirui Zhang   +5 more
wiley   +1 more source

Magnetically Actuated Microrobot for Drug Delivery: Current Progress and Challenges

open access: yesAdvanced Robotics Research, EarlyView.
Magnetically actuated microrobots are reshaping targeted drug delivery through wireless propulsion, programmable materials, and localized therapeutic release. This review examines how fabrication, body material selection, structural architecture, loading mechanisms, and imaging‐guided control converge to enable microrobotic therapies while identifying ...
Yang Yang, David J. Cappelleri
wiley   +1 more source

Reconciling the many faces of lateral gene transfer - Response from Ragan

open access: yes, 2002
The various methods for detecting potential lateral gene transfer events typically uncover different sets of genes. Because the procedures used to recognize transferred genes ask different types of questions, the sets of genes identified by each ...
Ragan, MA, Mark A Ragan
core   +1 more source

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