Described herein are multiply-fluorescently-labeled calcium phosphate protein substrates composed of a base coated with a fluorophore-labeled calcium phosphate coating and further having a fluorescently-labeled protein. The multiply-fluorescently-labeled substrate may be a fluorescently labeled calcium phosphate surface having a fluorescently-labeled collagen. The substrates are useful in culturing and studying the activity of a variety of cells, including bone cells. The substrates described herein can be used for both solution- and image-based analysis of cultured cells. New methods for producing and using such coated substrates are also disclosed.
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