The present invention relates to human diacylglycerol kinase proteins and particularly to human diacylglycerol kinase protein, and to related nucleotide sequences, expression vectors, cell lines, antibodies, screening methods, compounds, methods of production and methods of treatment, as well as other related aspects. Preferred compositions comprise an iron complex of tartaric acid for use in membrane electrolysis operations. When a scan signal indicates that a terminal delimiter of a bar code is included in a bar code segment that has been transected by a scan line, information is noted that can identify the scan line. The metering disk and housing can be arranged in planes parallel to one another. The injection material may be selectively distributed to molds attached in the first and second mold mounting surfaces.