When the first Mode checkbox is filled in the absolute mode, tissues whose standard deviation is greater than 50% of the average value for that tissue are coloured grey to mask them. The grey effect here alerts the user to this fact. When the second Mode checkbox is filled in the Relative mode, the Browser automatically colours grey all samples where the values used for the ratio calculation are less than 20 expression units, the Orbifloxacin background level for the AtGenExpress data sets. The grey effect in this case is useful for allowing the user to ignore values that may appear significantly higher relative to their control but are actually not likely biologically meaningful due to their very low absolute expression levels. If filtering or thresholding is not selected, the user is alerted to the fact that filtering or thresholding is possible but only in applicable cases, e.g. if the scale maximum has changed between views or if the replicate values for a given sample in a view exhibit high variation. Only tissues that have been coloured in the input graphic and indexed with that specific colour in the XML control file will be subject to colour replacement by the eFP Browser engine. As well, on mouseover, the tissue��s name and expression level absolute or relative, along with the fold-change or standard deviation �C is displayed. A similar feature allows a developer to embedded URLs �C either with or without the parameters passed to the eFP Browser �C within the image map of the output. An example of such embedded URLs with parameters is seen in Figure 2 in the form of the small magnifying glasses. Clicking on these allows the user to ����zoom in���� to a tissuespecific data set. These types of embedded URLs have the same effect as Levobetaxolol hydrochloride changing the Data Source manually to ����Tissue Specific����. A link is provided underneath the image to direct the user to a temporary page listing all the expression values, fold-changes or standard deviation values, and samples names. Also located on the bottom of the page are a variety of links to information on the gene, other BAR tools, and the XML source file. Lastly, helpful instructions and detailed average expression graphs are available on a click of the question mark link or the miniature distribution graphs on the final image.