Abstract: An improved system for the conversion, storage and querying of cellular biological assay data on the basis of experimental design. The system relies on a library of data entry forms inclusive of separate forms for prompting a user to enter data characterizing the effects of a test agent applied to a test cell population's experimental group as compared to its control group with all other agents being identical between the experimental group and control group, and assay forms for prompting a user to enter data characterizing an experimental effect of an agent on said test cell population. The collected data is stored in different data storage records inclusive of a first data storage record incorporating characteristics of all agents entered by said agent data entry forms, and a second data storage record incorporating all experimental effects of agents as entered by said assay data entry forms. The first data storage record is related to the second data storage record by one or more shared fields.

Abstract: An improved measuring, marking, and cutting tool comprising a tape measuring device within a housing which contains a guide and brake, and a pencil/knife holding attachment affixed to the distal end of the extensible, flexible measuring tape. The guide is a rigid, straight structure running along the bottom of the housing, and provides for a method of smoothly following along the straight edge of a workpiece, thereby facilitating long, straight, perpendicular marks or cuts. The brake mechanism is engaged by the guide structure, allowing the user to engage the brake and fix the measuring length of the tape by merely pushing down on the housing. The pencil/knife holding attachment is comprised of two Velcro (.TM.) straps that can be wrapped around and affixed to a standard pen, pencil, utility knife, and the like.