Epithelial mesenchymal interaction in tooth development is an example of:: (A) Cell signaling, (B) Calcification, (C) Histodifferentiation, (D) Morphodifferentiation
Answer is A. Cells interact through a system of effectors, modulators, and receptors called cell signaling. An example of such a system is epithelial-mesenchymal interaction in tooth development. The precursor cells, odontoblast and ameloblast, establish a positional relationship by means of effectors and receptors that are on the cell surface.