Abstract: A method for enrichment and isolation of microbial cells and microbial nucleic acids from a biological sample is described. The method comprises (i) adding to an initial volume of biological sample a differential cell lysis solution to obtain a final concentration of 0.1 to 1% of SDS in the sample; (ii) mixing the solution obtained in step (i) for a period of time sufficient to lyse the host cells present in the biological sample, while preserving the integrity of cells; and (iii) separating the microbial cells from the lysed host cells components. Differential cell lysis solutions and kits for practicing the method of the present invention are also provided.

Abstract: A method for enrichment and isolation of microbial cells and microbial nucleic acids from a biological sample is described. The method comprises (i) adding to an initial volume of biological sample a differential cell lysis solution to obtain a final concentration of 0.1 to 1% of SDS in the sample; (ii) mixing the solution obtained in step (i) for a period of time sufficient to lyse the host cells present in the biological sample, while preserving the integrity of cells; and (iii) separating the microbial cells from the lysed host cells components. Differential cell lysis solutions and kits for practicing the method of the present invention are also provided.

Abstract: This application relates to an in vitro method of producing a polyclonal IgG preparation. The method comprises (i) placing a polyclonal B-cell population enriched in IgG-secreting B cells in a culture medium; and (ii) culturing the polyclonal B-cell population under conditions enabling the production of the polyclonal IgG preparation from the polyclonal B-cell population. This improved method enables the production of antibodies (preferably IgG) and facilitates long-term culture of polyclonal B-cell populations.

Abstract: This application relates to an in vitro method of producing a polyclonal IgG preparation. The method comprises (i) placing a polyclonal B-cell population enriched in IgG-secreting B cells in a culture medium; and (ii) culturing the polyclonal B-cell population under conditions enabling the production of the polyclonal IgG preparation from the polyclonal B-cell population. This improved method enables the production of antibodies (preferably IgG) and facilitates long-term culture of polyclonal B-cell populations.

Abstract: The worktable comprises a work platform and a multidirectional coupling for operatively attaching the work platform to an external structure. The multidirectional coupling comprises a first linear assembly comprising a first translation member and a second translation member engaging the first translation member and linearly movable relative to and along the first translation member between first and second limit positions and according to a first translation axis. The multidirectional coupling also includes a second linear assembly comprising a third translation member and a fourth translation member engaging the third translation member and linearly movable relative to and along the third translation member between third and fourth limit positions and according to a second translation axis that is transversal to the first translation axis.

Abstract: The worktable comprises a work platform and a multidirectional coupling for operatively attaching the work platform to an external structure. The multidirectional coupling comprises a first linear assembly comprising a first translation member and a second translation member engaging the first translation member and linearly movable relative to and along the first translation member between first and second limit positions and according to a first translation axis. The multidirectional coupling also includes a second linear assembly comprising a third translation member and a fourth translation member engaging the third translation member and linearly movable relative to and along the third translation member between third and fourth limit positions and according to a second translation axis that is transversal to the first translation axis.