. Author manuscript; available in PMC: 2009 Apr 1.

Published in final edited form as: Eur J Pharm Sci. 2008 Jan 31;33(4-5):371–379. doi: 10.1016/j.ejps.2008.01.006

Table 3.

Sensitization potential of p-phenylenediamine and 6-β-naltrexol in hairless guinea pigs.

	Group	Response grade					Incidence	Severity

		0	0.5	1	2	3
p-Phenylenediamine	Control	0	5	0	0	0	0/5	0.8
	Test	0	1	4	5	0	9/10	2.65
NTXOL	Control	5	0	0	0	0	0/5	0
	Test	5	0	0	0	0	0/5	0