1. A method for obtaining a population of cells, the method comprising: providing a population of cells comprising a target type of differentiated cells having a pre-identified cytoskeletal profile and at least one cell selected from the group consisting of undifferentiated cells, differentiating cells and differentiated cells being different from the target type of differentiated cells; and incubating the population of cells with a cytotoxic agent selective to a pre-identified cytoskeletal profile characterizing the target type of differentiated cells, in an amount and for a time period effective to selectively provide a modified population of cells being enriched with the target type of differentiated cells, wherein the modified population comprises at least 90% of the target type of differentiated cells, and wherein when transplanted into a subject, the modified population of cells do not develop rosette structures.