Patch testing in the rabbit using a modified human patch test method.

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Abstract
A 5 h, semi-occlusive human patch test repeated daily for 5 days, was modified for use in the rabbit Using this method, the relative irritancy of three cosmetic samples of known human irritancy was determined in the rabbit. In addition, attention was paid to assessment methods and a detailed histological scoring system is described as well as two methods of visual assessment. In order to compare the effectiveness of these methods, the reaction to a series of concentrations of sodium lauryl sulphate was examined. All three assessment methods gave similar results and the merits of combining histological and visual assessment are discussed.