Results 71 to 80 of about 6,841 (202)

A second actin-like MamK protein in Magnetospirillum magneticum AMB-1 encoded outside the genomic magnetosome island.

PLoS ONE, 2010
Magnetotactic bacteria are able to swim navigating along geomagnetic field lines. They synthesize ferromagnetic nanocrystals that are embedded in cytoplasmic membrane invaginations forming magnetosomes.
Jean-Baptiste Rioux, Nadège Philippe, Sandrine Pereira, David Pignol, Long-Fei Wu, Nicolas Ginet   +5 more
doaj   +1 more source

Magnetofossil Spike During the Paleocene-Eocene Thermal Maximum: Ferromagnetic Resonance, Rock Magnetic, and Electron Microscopy Evidence from Ancora, New Jersey, USA [PDF]

, 2007
Previous workers identified a magnetically anomalous clay layer deposited on the northern United States Atlantic Coastal Plain during the Paleocene-Eocene Thermal Maximum (PETM).
Kirschvink, Joseph L., Kopp, Robert E., Raub, Timothy D., Schumann, Dirk, Smirnov, Alexei V., Vali, Hojatollah   +5 more
core   +4 more sources

Micro/Nanorobot for Drug Delivery—A Review of Material Selections

Advanced NanoBiomed Research, Volume 6, Issue 3, March 2026.
This review explores material strategies for biomedical micro/nanorobots, emphasizing their roles in propulsion, navigation, drug delivery, and biodegradability. It highlights advancements in metallic, polymeric, and hybrid materials, while addressing clinical translation challenges such as toxicity, immune response, and manufacturability.
Xiaozhuo Wu, Bingyun Li, Malcolm Xing
wiley   +1 more source

A magnetotactic bacterium capable of magnetic sensing

iScience
Summary: Magnetosensitive organisms have the ability to sense and respond actively to features of magnetic fields such as the direction or magnitude.
Emilie Gachon, Sascha Lambert, Sandrine Grosse, Elsa Turrini, Emma Ropion, Stefan Klumpp, Christopher T. Lefèvre, Mila Sirinelli, Damien Faivre   +8 more
doaj   +1 more source

Intratumoral Bacteria: Accomplices in Cancer Progression and Emerging Therapeutic Targets

Medicine Advances, Volume 4, Issue 1, Page 31-37, March 2026.
Intratumoral bacteria are no longer seen as contaminants but as active contributors to cancer progression, driving therapy resistance and metastasis through metabolic reprogramming, immunomodulation, and metastatic niche formation. This review highlights emerging microbiome‐targeted strategies—including synthetic microbial consortia, engineered ...
Jie Yang, Qingyu Han, Qiang Zhang, Yixin Cao   +3 more
wiley   +1 more source

The Next Frontier: Micro/Nanorobots Operating Inside the Living Body

SmartBot, Volume 2, Issue 1, March 2026.
Micro/nanorobots, with their tiny size and controllable motion capabilities, can perform complex and precise tasks in micro‐spaces, thus showing broad application prospects in the biomedical field. This review systematically summarizes the core advantages of micro/nanorobots in real‐time in vivo imaging, targeted drug delivery, and active barrier ...
Ningbo Yu, Jie Yang, Zicheng Ni, Yuepeng Cai, Beatriz Jurado‐Sánchez, Renfeng Dong   +5 more
wiley   +1 more source

Magnetotactic Coccus Strain SHHC-1 Affiliated to Alphaproteobacteria Forms Octahedral Magnetite Magnetosomes

Frontiers in Microbiology, 2017
Magnetotactic bacteria (MTB) are morphologically and phylogenetically diverse prokaryotes. They can form intracellular chain-assembled magnetite (Fe3O4) or greigite (Fe3S4) nanocrystals each enveloped by a lipid bilayer membrane called a magnetosome ...
Heng Zhang, Heng Zhang, Heng Zhang, Heng Zhang, Nicolas Menguy, Nicolas Menguy, Fuxian Wang, Fuxian Wang, Fuxian Wang, Karim Benzerara, Eric Leroy, Peiyu Liu, Peiyu Liu, Peiyu Liu, Wenqi Liu, Wenqi Liu, Wenqi Liu, Chunli Wang, Yongxin Pan, Yongxin Pan, Zhibao Chen, Jinhua Li, Jinhua Li, Jinhua Li   +23 more
doaj   +1 more source

Time resolved 2 million year old supernova activity discovered in Earth's microfossil record

, 2016
Massive stars, which terminate their evolution as core collapse supernovae, are theoretically predicted to eject more than 1E-5 solar masses of the radioisotope 60Fe. If such an event occurs sufficiently close to our solar system, traces of the supernova
Bishop, Shawn, Chernenko, Valentyna, Deneva, Boyana, Egli, Ramon, Faestermann, Thomas, Famulok, Nicolai, Fimiani, Leticia, Gomez-Guzman, Jose Manuel, Hain, Karin, Hanzlik, Marianne, Korschinek, Gunther, Ludwig, Peter, Merchel, Silke, Rugel, Georg   +13 more
core   +1 more source

Comparing Paleointensity Recording Efficiencies of Detrital and Biogenic Magnetite by Deposition Experiments With Synthetic Sediments

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Marine sediments contain magnetic mineral particles of detrital, biogenic and authigenic origin that record changes in the direction and intensity of the geomagnetic field over geological time. Previous studies have demonstrated that the recording efficiencies of detrital and biogenic magnetite differ.
Kuang He, Huafeng Qin, Sophie C. Roud, Zhaoxia Jiang, Menghan Li, Wenhui Li, Yu‐An Du, Sanzhong Li, Tilo von Dobeneck   +8 more
wiley   +1 more source

Biosynthesis of iron oxide magnetic nanoparticles using clinically isolated Pseudomonas aeruginosa

Scientific Reports, 2021
Magnetotactic bacteria are microscale complex natural systems that synthesize magnetic nanoparticles through biologically controlled mineralization. Nanoparticles produced by this process are biocompatible due to the presence of surrounding membranes ...
Abid Ali Khan, Sana Khan, Suhaib Khan, Simone Rentschler, Stefan Laufer, Hans-Peter Deigner   +5 more
doaj   +1 more source