Now that you have selected a Theiler Stage and an embryo model you can choose what to see from the data that relates to this model.
As you 'mouse over' the highlighted items in the list, an image will appear to the right of the page showing a typical example of the data.
Clicking on a highlighted list item will open up a new browser window displaying the relevant data associated with the current model.
If the check-box / list item is greyed out, it means that this data is not available for the model you have selected.