Figure 1From: The effects of vitamins C and B12 on human nasal ciliary beat frequency Changes of CBF in response to vitamin C. Ciliary beat frequency of cultured human nasal epithelial cells, measured before and every 1Â min after treatment with 0.01% (n = 7, green dotted line), 0.10% (n = 7, blue dotted line) and 1.00% (n = 7, red dotted line) vitamin C, or HBSS (n = 7, black dotted line) over 20Â minutes. *P < 0.05, vs. 0Â min of each group.Back to article page