Abstract:
A thin film culture device for enumerating mold colonies is provided. The device comprises water-resistant first and second substrates with a growth region disposed therebetween, a dry, cold water-soluble gelling agent disposed in the growth region, and an effective amount of a calcium-chelating compound disposed in the growth region. The effective amount of calcium-chelating compound is capable of reducing a rate of lateral enlargement of the colony-forming unit growing in the culture device relative to the rate of lateral enlargement of a colony of the same mold species growing in an otherwise identical culture device that does not contain the effective amount disposed in the growth region, wherein reducing the rate of lateral enlargement of the colony-forming unit does not substantially delay detection of the colony. A corresponding method is also provided.
Abstract:
The present invention relates to the field of testing and evaluation of biological samples and provides apparatus for cultured samples comprising at least one independently accessible module adapted for incubating at least one of a plurality of samples wherein the at least one module is operatively associated with a light source and a movable optical inspection means adapted for motion about a viewing axis through the module to enable a sweeping of viewing area. The invention also provides a method of assessing cultured samples for viability comprising the steps of: disposing biological samples in a substantially elliptical arrangement within a culturing chamber of an independently accessible module; imaging individual samples of the substantially elliptical arrangement with optical inspection means driven within an X-Y plane that is normal to a viewing axis through the module to obtain time lapse measurement of development of individual samples.
Abstract:
A container for culturing a test sample includes a molded monolithic single layer polymeric container body having an upwardly extending, visually transmissive wall with an inner surface and a wall thickness that is between about 0.2 mm and 10 mm. The container also has a thin gas barrier coating comprising silica on the inner surface of the sealed container body and an internal top coating on the gas barrier coating. The gas barrier and top coating are visually transmissive (after curing). The container includes a cap sealably attached to the container body. The sealed container has an oxygen transmission rate (OTR) after autoclaving and aging that is between about 0.0001 to about 0.04 (cc/package/day/atm).
Abstract:
A cell culture device can include: a top wall; a bottom wall; one or more perimeter walls coupled with and extending between the top wall and bottom wall; and at least 3 distinct chambers between the top wall, bottom wall. The one or more perimeter walls can include: an internal chamber defined by at least one porous internal wall and having an internal chamber inlet and an internal chamber outlet; one or more boundary layer chambers having at least an inner boundary layer chamber defined by the at least one porous internal wall and at least one porous inner boundary layer wall, the at least one porous internal wall having a plurality of pores fluidically coupling the central internal chamber to the one or more boundary layer chamber; and an outer chamber defined by an outer porous boundary layer wall of the at least one porous boundary layer walls and the one or more perimeter walls and having an outer chamber inlet and an outer chamber outlet, the outer porous boundary layer wall having a plurality of pores that fluidically couple the outer chamber with the one or more boundary layer chambers. In one aspect, wherein the at least three distinct chambers are nonlinear and/or idealized.
Abstract:
The disclosure relates to the fabrication of a three dimensional [3-D] cell culture membrane comprising one or more functionalized surfaces adapted to provide cell culture conditions suitable for the analysis of proliferation, differentiation or function of cells, typically eukaryotic or prokaryotic cells.