Abstract: The invention generally provides a cell culture vessel having at least one first zone and at least one second zone, wherein the first zone is a transfer zone for a culture medium which essentially contains no cells and the second zone is a cell culture zone. The invention further includes methods utilizing the cell culture vessel.

Abstract: The invention relates to a process for the coloring of cells, preferably E1-immortalized HER cells, more preferably PER.C6 cells in a reactor in suspension in a cell culture medium, wherein the cells produce a biological substance, preferably an antibody, wherein at least one cell culture medium component is fed to the cell culture and wherein the cell culture comprising the cells, the biological substance and cell culture medium is circulated over a separation system and wherein the separation system separates the biological substance from substances having a lower molecular weight than the biological substance and wherein the biological substance is retained in or fed back into the reactor. Preferably part of the substances of lower molecular weight is continuously removed from the cell culture.

Abstract: One or more embodiments are described directed to a method and system for concentrating components of a fluid circulated through a cell growth chamber such as a cell growth chamber. Accordingly, embodiments include methods and systems that utilize a tangential flow filter to concentrate components of a fluid that in embodiments includes expanded cells. In embodiments, a concentrated fluid component and a concentrated cell component are generated by flowing the fluid with expanded cells across a tangential flow filter. The concentrated cell component may be recirculated to the tangential flow filter to reach some desired concentration of cells. The concentrated fluid component may be collected to utilize cellular-produced constituents in the concentrated fluid component.

Abstract: Systems and methods for the removal of contaminants from a liquid culture microalgae and/or cyanobacteria comprise an inlet tube, a pump, a gas injector, a vertical chamber, and/or a collection container that promotes the production of foam in the microalgae culture, wherein the foam contains the contaminants.

Abstract: The present disclosure provides compositions comprising musculoskeletal cells and mesenchymal stem cells in discrete regions. The present disclosure provides systems comprising a subject composition; and methods of using a subject composition to generate cartilage, bone, tendon, muscle, intervertebral disc, or other musculoskeletal tissues.

Abstract: Systems and methods for the removal of contaminants from a liquid culture microalgae and/or cyanobacteria comprise an inlet tube, a pump, a gas injector, a vertical chamber, and/or a collection container that promotes the production of foam in the microalgae culture, wherein the foam contains the contaminants.

Abstract: Systems and methods for the removal of contaminants from a liquid culture microalgae and/or cyanobacteria comprise an let tube, a pump, a gas injector, a vertical chamber, and/or a collection container that promotes the production of foam in the microalgae culture, wherein the foam contains the contaminants.

Abstract: The present invention relates to methods for cultivating dermal fibroblasts, methods for preparing in vitro dermis equivalents, methods for preparing three-dimensional in vitro skin equivalents, an in vitro dermis equivalent, a three-dimensional in vitro skin equivalent, and methods for determining the effect of a chemical substance or of an agent on human skin cells using the in vitro dermis equivalent and/or the in vitro skin equivalent.

Abstract: The invention relates to a device and a method for retaining and recirculating cells in a vessel through which flow passes continuously or batchwise. In addition, the invention relates to a method of producing a device by which cells can be retained and recirculated in a vessel through which flow passes continuously or batchwise.

Abstract: The present invention provides a novel apparatus to grow cells where the cultivation chamber (1) is partially filled with liquid cultivation medium and cells. Mixing and aeration is achieved by generating intermittently one single large gas bubble (6) at the bottom of the column bioreactor, the single large bubble width representing from 50 to 99% of the tank width, preferably from 60 to 99%, more preferably 98.5%. The culture medium flows out as a film between the large bubble and the inner wall of the bioreactor. This rising bubble allows mixing and aeration of the bulk. As the design of the invention is very simple, it is possible to manufacture it with flexible plastic material and use the apparatus as a disposable system. Moreover, such a mixing/aeration principle minimizes cell damages usually due to shear stress and small bubbles and allows easy and efficient scale-up from small scale to a larger one. Such a large-scale, efficient and disposable culture system can largely reduce production costs.

Abstract: Disclosed is a method for in vitro growing of connective tissue substitute, said connective tissue substitute being populated with fibroblasts, a connective tissue substitute obtainable by such a method, as well as a method for closing of a wound, wherein such connective tissue substitute is applied onto a wound.

Abstract: The present invention relates to a device for the aeration of liquid media by means of tube aeration, special tube modules contained therein and the use of a device for the aeration of liquid media.

Abstract: The present invention relates to methods for cultivating dermal fibroblasts, methods for preparing in vitro dermis equivalents, methods for preparing three-dimensional in vitro skin equivalents, an in vitro dermis equivalent, a three-dimensional in vitro skin equivalent, and methods for determining the effect of a chemical substance or of an agent on human skin cells using the in vitro dermis equivalent and/or the in vitro skin equivalent.

Abstract: The present invention relates to in vitro cultured skin substitutes, and in particular to improved methods for organotypic culture of skin substitutes. In some embodiments, the dermal equivalent of the skin substitute is lifted to air interface of the culture prior to seeding with keratinocytes. In other embodiments, increased concentrations of collagen are used to form the dermal equivalent. In still other embodiments, optimized media are utilized to maintain the skin equivalents.

Abstract: The invention relates to a method of improving the transfer in an annular biological reaction chamber defined by coaxial inner and outer walls (11, 12) and in which there flows a liquid reaction medium containing a culture of microorganisms or of cells from vegetable or animal macroorganisms in suspension. At least one of the walls is an exchange wall enabling gaseous or liquid matter to be transferred or allowing light to pass through. The reaction medium is subjected to a turbulent primary flow that is helical and that under the action of centrifugal force creates rotary secondary vortices so as to encourage renewal of the culture in the vicinity of the exchange wall.

Abstract: A three dimensional cell scaffold is provided including a biocompatible polymer formed from a plurality of fibers configured so as to form a non-woven three dimensional open celled matrix having a predetermined shape, a predetermined pore volume fraction, a predetermined pore shape, and a predetermined pore size, with the matrix having a plurality of connections between the fibers.

Abstract: A disposable device and method for axenically culturing and harvesting cells and/or tissue in consecutive cycles. The device consist of a sterilizable transparent and/or translucent disposable container which may be at least partially filled with a suitable sterile biological cell and/or tissue culture medium and/or axenic inoculant and/or sterile air and/or required other sterile additives. The container has means for removing excess air and/or waste gases therefrom, and means for introducing the inoculant and/or culture medium and/or additives therein. The device also has at least one air inlet, and preferably a plurality thereof, for introducing sterile air into the device. The device is characterised by having a reusable harvesting means comprising suitable flow control means for enabling harvesting of at least a portion of the medium containing cells and/or tissue when desired, thereby enabling the device to be used continuously for at least one subsequent consecutive culturing/harvesting cycle.

Abstract: A culturing system and method particularly useful for producing cellular products such as viral pathogens of cells. It includes a mass transfer culture segment, stacked filter plates to adjust the medium composition, and a product removal and concentration segment. The mass transfer culture segment utilizes changed directional flow of the medium to maximize cell growth and production of product. The stacked filter plates allow addition of sterile fresh medium and removal of growth inhibitory substances.