In the top selection box, the virus and the receptor gene are co-selected, i.e. when a virus is selected, the "Receptor" field will turn to the correspondent ones, vice verse. As for the "Expression Value" field, user can choose according to their own needs.

The anatomical diagram at the top shows the expression level of the selected gene in different tissues/organ. The color of each tissue/organ icon represent expression level, red means high and green means low. When user's mouse move over the icon, concrete number and tissue/organ name will appear.

The boxplot display the expression level over different tissue/organ and gender. The meaning of Y-axis changes depending on user's choice.