Abstract: The present invention provides methods and systems for performing biological reactions with biologically active entities immobilized on a solid support. Particularly, the invention provides a biologically active entity immobilized a support through a spacer linked to a first linker. The spacer gives the biologically active entity a certain level of free movement relatively to the support surface to which it is fixed, thereby allowing the biological reaction to take place.

Abstract: The present invention provides methods and systems for performing biological reactions with biologically active entities immobilized on a solid support. Particularly, the invention provides a biologically active entity immobilized a support through a spacer linked to a first linker. The spacer gives the biologically active entity a certain level of free movement relatively to the support surface to which it is fixed, thereby allowing the biological reaction to take place.

Abstract: An auxiliary bed extension U-shape plate destined to be edgewisely mounted to the cylinder bed of a sewing machine for increasing the planar work supporting surface thereof. The bed extension comprises a main, rigid, panel defining an inner recess for shapingly conforming to the cylinder bed, the inner recess of generally quadrangular shape. The web of the U-shape extension plate is telescopingly extensible and the two side legs thereof are extensible with add-on strips, wherein the extensible bed is adjustable in length as well as in width. The panel is supported edgewisely to the cylinder bed in generally coplanar fashion to the work supporting surface of the latter, whereby an enlarged, planar, generally coextensive, work supporting surface is obtained by the cylinder bed and extension bed plate.