obsolete reversion of cell type to default state involved in phenotypic switching true jl GO:0044664 This term was made obsolete because it is ambiguous. biological_process OBSOLETE. The cellular process of the reversion of cells to their original cell type, occurring as part of the process of phenotypic switching. Phenotypic switching begins with changes in cell morphology and altered gene expression patterns and ends when the morphology of a population of cells has reverted back to the default state, accompanied by altered expression patterns. 2012-08-07T14:35:48Z