Figure 2.

Steps of a query for expression data based on a gene name. (A) In order to localize expression data for cannabinoid receptor 1, its LocusLink gene symbol ‘Cnr1’ is typed into the query field. Several data sets at different developmental stages are displayed as results. (B) Data set MH99 is selected and opened in the set viewer. Information related to this gene and data set is displayed in the left part of the page, along with the annotation of the expression pattern. Browsing through the list of images in the right part of the page, an image of interest is selected and opened in the Java applet viewer (C). (D) Any region of the image can be magnified either by stepwise zooming in or by directly selecting a rectangle of interest. (E) At the maximum zoom level, single cells are distinguishable [magnified view of the original screenshot in (D) without further resolution enhancement].