Assertion: yam's vitamin c | /r/HasProperty | strong antioxidant
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Source sentences:
text: These tubers also provide decent amounts of other micronutrients, such as copper and vitamin C. Copper is vital for red blood cell production and iron absorption, while vitamin C is a strong antioxidant that can boost your immune system ( 5 , 6 , 7 , 8 ).
text: Sweet potatoes are also great sources of vitamin C, a powerful antioxidant that plays key roles in immune system health, connective tissue development, and wound healing.