Results 61 to 70 of about 39,522 (160)

The gas permeability coefficient of the cyanobacterial gas vesicle wall [PDF]

open access: yesJournal of General Microbiology, 1992
Summary: The gas permeability coefficient of the cyanobacterial gas vesicle wall has been determined by comparing the concentration gradient of oxygen gas in a film of gas vesicles with the gradient in an underlying film of agar supported over an oxygen atmosphere. The gradients were determined with an oxygen microelectrode.
Walsby, AE, Revsbech, NP, Griffel, DH
openaire   +1 more source

The LacI–Family Transcription Factor, RbsR, Is a Pleiotropic Regulator of Motility, Virulence, Siderophore and Antibiotic Production, Gas Vesicle Morphogenesis and Flotation in Serratia

open access: yesFrontiers in Microbiology, 2017
Gas vesicles (GVs) are proteinaceous, gas-filled organelles used by some bacteria to enable upward movement into favorable air/liquid interfaces in aquatic environments. Serratia sp.
Chin M. Lee   +3 more
doaj   +1 more source

Biological Effect of Streptococcus pyogenes-Released Extracellular Vesicles on Human Monocytic Cells, Induction of Cytotoxicity, and Inflammatory Response

open access: yesFrontiers in Cellular and Infection Microbiology, 2021
Most bacteria naturally release spherical lipid-bilayered extracellular vesicles (EVs) containing proteins, nucleic acids, and virulence-related molecules, thus contributing to diverse biological functions including transport of virulence factors.
Kazunori Murase   +6 more
doaj   +1 more source

Comparative studies on calothrix isolates from Nepalese rice-fields [PDF]

open access: yes, 1989
Algal samples were collected from three rice-fields in Nepal: A) Parwanipur (100 m), B) Khumaltar (1336 m) and C) Kakani (2064 m); the rice- field algal flora from 1982, 1983 and 1986 samples was recorded.
Vaidya, Hind Maiya
core  

Gas vesicles isolated from Halobacterium cells by lysis in hypotonic solution are structurally weakened

open access: yes, 2005
Analysis of pressure-collapse curves of Halobacterium cells containing gas vesicles and of gas vesicles released from such cells by hypotonic lysis shows that the isolated gas vesicles are considerably weaker than those present within the cells: their ...
Pri-El, N   +3 more
core   +1 more source

Rapid Recovery of Buoyancy in Eutrophic Environments Indicates That Cyanobacterial Blooms Cannot Be Effectively Controlled by Simply Collapsing Gas Vesicles Alone

open access: yes, 2023
Many aquatic ecosystems are seriously threatened by cyanobacteria blooms; gas vesicles enable cyanobacteria to form harmful cyanobacterial blooms rapidly.
Tianhao Wu   +3 more
core   +1 more source

ULTRASTRUCTURE OF THE CAMEL'S PULMONARY ALVEOLI WITH SPECIAL REFERENCE TO THE AIR-BLOOD BARRIER [PDF]

open access: yesAssiut Veterinary Medical Journal, 2006
The present study was conducted to characterize the cellular population lining the alveoli of the camel's lung. It focused on the ultrastructural findings and their reflection on the physiological role in gas exchange and transcytosis through the air ...
AMAL A. MOKHTAR, A.H.K. OSMAN
doaj   +1 more source

Photosynthetic activity and population dynamics of Amoebobacter purpureus in a meromictic saline lake [PDF]

open access: yes, 1994
A dense population of the purple sulfur bacterium Amoebobacter purpureus in the chemocline of meromictic Mahoney Lake (British Columbia, Canada) underwent consistent changes in biomass over a two year study period.
Hall, K. J.   +2 more
core   +1 more source

Ultrasound Molecular Imaging of Bladder Cancer via Extradomain B Fibronectin-Targeted Biosynthetic GVs

open access: yesInternational Journal of Nanomedicine, 2023
Yanan Feng,1,2,* Yongsheng Hao,3,* Yuanyuan Wang,3 Weijian Song,1,4 Shanxin Zhang,1 Dong Ni,5 Fei Yan,3 Litao Sun1 1Cancer Center, Department of Ultrasound Medicine, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou ...
Feng Y   +7 more
doaj  

Use of Cyanobacterial Gas Vesicles as Oxygen Carriers in Cell Culture

open access: yes, 2006
The gas vesicles isolated from the cells of filamentous cyanobacterium Anabaena flos-aquae were treated and sterilized with glutaraldehyde and then evaluated for their effectiveness as gas carriers in cell culture.Anchorage-dependent Vero cells were ...
Ju, Lu-Kwang
core   +1 more source

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