Embodiments of a system and method for polishing substrates are provided. The specific tissue cell lines are selected from fibroblasts, osteoblasts, myoblasts, adipocytes, chondrocytes and endothelial cells. The novel chemiluminescent compounds and labeled conjugates are convenient to prepare, are highly stable, and generate chemiluminescence rapidly on demand. The selector may be configured to receive an output signal from one of the auxiliary memory elements and a scan input signal. The step of externalizing a record includes the making of a call by an application program using data belonging to the record to an interface, arranged to transfer the piece of data to the secondary data storage system. When the subset of successful rows is found, embodiments are able to provide assurance that no side effects have been executed on behalf of any of the failed rows by deferring execution of triggers until an entire set of rows can be saved and committed.