Which of the following tasks is possible with current stem-cell and reprogramming technology? (multiple correct answers)

1. Guiding iPS cells to generate any desired adult cell type.
2. In vitro screening for drug discovery using embryonic stem cells as disease models.
3. Forcing transdifferentiation of fibroblast cells into muscle cells.
4. Guiding ES cells to generate any desired adult cell type.
5. Generating functional whole organs from iPS cells for transplantation.

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