<prompt> Early Bell stage differ from advanced Bell stage:Morphodifferentiation occurs in Early Bell stage and Histodifferentiationoccurs in advanced Bell stage.Morphodifferentiation occurs in advanced Bell stage and Histodifferentiation occurs in Early Bell stage.Different in Apposition.None.  <response>: These are developmental stages of tooth.Histodifferentiation occurs in early bell stage white morphodifferentiation occurs in advanced bell stage. 