TOMORROW: Coaxing the body to grow bone and cartilage on biodegradable scaffolds infused with a mix of stem cells and growth factors

TOMORROW: Grown in the lab from stem or precursor cells to avoid rejection by the immune system

TOMORROW: Grown by the body from stem or precursor cells and growth factors

TOMORROW: Genetically engineered tissue grown in the lab and attached for final growth to form fully functional penis

TOMORROW: Prosthetics wired directly to motor portions of the brain to improve control and simulate the sensations of touch, pain, etc.

TOMORROW: Regenerated from stem or precursor cells in the body

TOMORROW: Heart, liver, kidneys grown from stem cells in vitro and transplanted into the body

TOMORROW: Growing functional patches of heart muscle or coaxing existing heart-muscle cells to repair themselves

TOMORROW: Implants that can be adjusted to pick up a wider range of frequencies at longer distances

TOMORROW: Breast may be grown in the lab from a patient's own fat cells and infused back through keyhole slits in the chest

TOMORROW: Permanent lens implants to correct vision while leaving the cornea intact

TOMORROW: More permanent approaches, perhaps by stimulating shrunken follicles with growth proteins