Britt DM, Cohen LM, Collins FL, Cohen ML. Cigarette smoking and chewing gum: response to a laboratory-induced stressor. Health Psychol. 2001 Sep 1;20(5):361-8.
Nicholls TJ, Cook DJ, Rogers DJ, Wolowacz SE, Smart JD. An investigation of lectin toxicity with cultured human conjunctival epithelial cells; lectins: biology biochemistry. Clin Chem. 1996;11:273-6.