Bring a carotenoid extract the UV rays protection tests to get to the cell culture and cell count measurement fibroblast type that survives to see the efficiency of UV radiation from cell protection.
The extract carotene carotenoids were tested UV protection with type fibroblast cell culture and cell count was still alive to see the efficiency of the cell block radiation from UV.
Extract carotenoids to test radiation protection UV with cell culture type fibroblast and measure count cell also live to see the efficiency of protection. Cell from radiation UV.