A seeding layer specifies the seed that will be used in one of the drops in each well of the layer. Seeds are crystal fragments taken from previous experiments that are used to speed up crystal formation in new experiments.
Like protein layers, seeding layers can span multiple other layers. For example, if you design an experiment that contains a screen layer, a random layer, and a grid layer, you can use the same seed in all three layers by drawing a seeding layer that encompasses all of them.
On the canvas, a seeding layer is represented graphically by shading in one of the drops located above each well, as illustrated in the following example.
A Seeding Layer
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