Marigold wepụ lutein

Chenguang Biotech – Onye na-eweta lutein dị mkpa n'ụwa niile Ngwaahịa sitere n'okike bara ụba na carotenoid Lutein nnukwu, ụdị mmepụta na-aga n'ihu na akpaaka na-enyere aka ịnọgide na-enwe anya ahụike na Brain United States Patent: US 8,921,615, B2