Concept

Microbiological culture

Related publications (146)

Oxidation of Antibacterial Compounds by Ozone and Hydroxyl Radical: Elimination of Biological Activity during Aqueous Ozonation Processes

A wide variety of antibacterial compounds is rapidly oxidized by O-3 and hydroxyl radical ((OH)-O-center dot) during aqueous ozonation. Quantitative microbiological assays have been developed here or adapted from existing methods and utilized to measure th ...

2009

3D multi-chamber fluidic systems for analysis of angiogenesis in biomaterials: development, characterization and applications

Carmen Bonvin

The cellular processes leading to capillary morphogenesis depend on external stimuli, in particular flow and morphogen gradients. Several devices have been designed to study these interactions in vitro. However, most of these devices allow a single experim ...

2009

Limited diffusive fluxes of substrate facilitate coexistence of two competing bacterial strains

Dani Or

Soils are known to support a great bacterial diversity down to the millimeter scale, but the mechanisms by which such a large diversity is sustained are largely unknown. A feature of unsaturated soils is that water usually forms thin, poorly-connected film ...

Blackwell Publishing Ltd, Oxford2008

The kinetics of polyethylenimine-mediated transfection in suspension cultures of Chinese hamster ovary cells

Florian Maria Wurm, David Hacker, Martin Bertschinger, Jean Cevey

The kinetics of polyethylenimine (PEI)-mediated gene transfer at early times after transfection of Chinese hamster ovary (CHO) cell in suspension were investigated using a novel in vitro assay. Addition of an excess of competitor DNA to the culture medium ...

Humana Press Inc, Springer2008

Cell culture imaging using microimpedance tomography

Philippe Renaud, Olof Pontus Linderholm

We present a novel, inexpensive, and fast microimpedance tomography system for two-dimensional imaging of cell and tissue cultures. The system is based on four-electrode measurements using 16 planar microelectrodes (5 mum x 4 mm) integrated into a culture ...

2008

Delta-like 1 participates in the specification of ventral midbrain progenitor derived dopaminergic neurons

Patrick Aebischer, Manuel Bauer

Delta-like 1 (Dlk1), a member of the Delta/Notch protein family, is expressed in the mouse ventral midbrain (VM) as early as embryonic day 11.5 (E11.5) followed by exclusive expression in tyrosine 3-monooxygenase (TH) positive neurons from E12.5 onwards. T ...

2008

Quantitative characterization of a recombinant Pichia pastoris Mut+ strain secreting avidin using transient continuous cultures

Carmen Jungo

The objective of this thesis was to characterize the growth stoichiometry, the specific recombinant protein productivity and the regulation of the alcohol oxidase (AOX) enzyme of a Pichia pastoris Mut+ strain, performing conventional chemostat cultures and ...

EPFL2007

Bipolar resistivity profiling of 3D tissue culture

Philippe Renaud, Yann Barrandon, Olof Pontus Linderholm, Jonas Vannod

We describe a new low-cost technique for continuous monitoring of the thickness of biofilms and tissue cultures, and we demonstrate the advantage of using electrodes of different dimensions to probe different depths of a sample. We have used electric imped ...

2007

Two-dimensional microimpedance imaging for cell culture monitoring

Olof Pontus Linderholm

This thesis presents the fabrication and design of an impedance imaging sensor, and its application to monitoring in-vitro skin culture. Three-dimensional tissue cultures are becoming increasingly important in biological and medical research. There is, how ...

EPFL2006

Carbon metabolism of intracellular bacteria

John McKinney

Bacterial metabolism has been studied intensively since the first observations of these 'animalcules' by Leeuwenhoek and their isolation in pure cultures by Pasteur. Metabolic studies have traditionally focused on a small number of model organisms, primari ...

2005

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