A magnetic recording tape according to one embodiment includes a plurality of servo tracks, each servo track comprising a series of magnetically defined bars, wherein an average height of the bars is less than about 50 microns. In particular, the present invention relates to systems and methods for producing, transporting, storing and using skin equivalents produced by organotypic culture at reduced temperatures, preferably from 2-8 degrees Celsius to ambient temperature. A signal-to-ASE ratio is calculated from the total value of the signal beam power and the total value of the ASE power. In the large-exposure amount mode, appropriate exposure can be given to a subject when an exposure value at ISO 100 is less than 8. In the preferred embodiment, there is an arrow, or other visual indicator, between the visual representations of such items to indicate that the items are synchronized.