参考文献：

1.Palu AK, Kim AH, West BJ, Deng S, Jensen J, White L. The effects of Morinda citrifolia L. (noni) on the immune system: its molecular mechanisms of action. J Ethnopharmacol. 2008 Feb 12;115(3):502-6. doi: 10.1016/j.jep.2007.10.023. Epub 2007 Oct 24. PMID: 18063495.

2.Vallance S. Relationships between ascorbic acid and serum proteins of the immune system. Br Med J. 1977;2(6084):437-438.  u

3.Prinz W, Bortz R, Bregin B, Hersch M. The effect of ascorbic acid supplementation on some parameters of the human immunological defence system. Int J Vitam Nutr Res. 1977;47(3):248-257. 

4.Hume,R; Weyers, E. Changes in Leucocyte Ascorbic Acid during the Common Cold. Scottish Medical Journal 1973; 18:3-7.