A system and method to read and write data at a memory cell that includes multiple non-volatile memories is disclosed. The invention further provides expression cassettes, host cells and transformed plants containing the nucleic acids. The invention still further includes a kit comprising a eukaryotic histone H1-containing antibiotic pharmaceutical composition and an instructional material which describes the use of the composition. Alternatively, the coil may be a helically wound spool of wick in a somewhat more elongated tubular housing. The relay also has an arrangement in which the fixed contacts are directly associated with the connectors on the module and the movable contacts are associated therewith, and can be provided as either normally open or normally closed contacts. Therefore, user can draw the tool bit out easily, even the tool bit is generally completely received in the main body.