vitc cherry West indian cherry—richest known source of natural vitamin C vitamin_c VITAMIN C ascerola Acerola juice—The richest known source of Vitamin C mango_c Vitamin C Concentration in Developing and Mature Fruits of Mango (Mangifera indica L.) Iggo_1956 The determination of vitamin C in normal human plasma and erythrocytes Harrison_1956 Interconversion of α-tocopherol and its oxidation products arthritis Vitamin C and Rheumatoid Arthritis.