Abstract: This invention comprises a method for generating functional neural networks using neural progenitor cells on microelectrode arrays (MEAs). The method involves dissociating neural progenitor cells from an embryo, propagating the neural progenitor cells, passaging the neural progenitor cells and seeding the neural progenitor cells on MEAs to produce a functional neural network. The neural progenitor cells may be continuously passaged to propagate an endless supply of neural progenitor cells. The resultant passaged progenitor cell derived neural network MEA may be used to detect and/or quantify various biological or chemical toxins.

Abstract: A method of generating tissue from stem and progenitor cells is disclosed. Primary mammalian stem cells and progenitor cells are placed in an extracellular matrix. The matrix is maintained in a culture medium and a microgravity environment.

Abstract: This invention comprises a method for generating functional neural networks using neural progenitor cells on microelectrode arrays (MEAs). The method involves dissociating neural progenitor cells from an embryo, propagating the neural progenitor cells, passaging the neural progenitor cells and seeding the neural progenitor cells on MEAs to produce a functional neural network. The neural progenitor cells may be continuously passaged to propagate an endless supply of neural progenitor cells. The resultant passaged progenitor cell derived neural network MEA may be used to detect and/or quantify various biological or chemical toxins.

Abstract: A method of generating tissue from stem and progenitor cells is disclosed. Primary mammalian stem cells and progenitor cells are placed in an extracellular matrix. The matrix is maintained in a culture medium and a microgravity environment.

Abstract: A machine purchasing system includes a database server (1), an application server (2), and a plurality of distributed client computers (4). The system receives historical transaction records from a financial management system (6) and current prices from an electronic marketing system (5), and sets a base price for each to-be-purchased machine based on the above received information. Users select one or more eligible suppliers based on the base price and the supplier's information. The client computers are for searching information stored in the database server. A related machine purchasing method is also disclosed.

Abstract: A project bidding transaction management system in accordance with a preferred embodiment of the present invention includes a database server (1) for storing data used or generated in implementing the project bidding transaction management system, and an application server (2) for managing project bidding transactions. The application server includes: a basic data maintenance module (20) for receiving requirements of outsourcing projects, and generating specifications for the outsourcing projects; a bidder selection module (21) for selecting a plurality of suitable bidders from a list of companies wishing to bid on an outsourcing project; a price negotiation management module (22) for performing price negotiations with bidders, and generating price negotiation records; and a bid comparison module (23) for determining a winning bidder as a contractor for each outsourcing project, and generating bid results. A project bidding transaction management method is also disclosed in the present invention.