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Assessment of cutaneous sulfur mustard injury in the weanling pig

The euthymic hairless guinea pig was the animal model of choice at this laboratory for vesicant injury research. The supply of these animals, however, was interrupted in 1993 by an outbreak of Lisferia monocyfogenes at the commercial supplier's breeding facility, thereby forcing a search for alternative animal models. This report describes the development of a weanling pig model for use in evaluating the severity of skin lesions induced by sulfur mustard [bis(2‐chloroethyl)sulfide; SM] using a variety of bioengineering techniques. These methods include reflectance colorimetry (erythema response), high frequency ultrasound imaging (edema response) and a modified dermal torque meter procedure to test for Nikolsky's sign (damage at the dermal‐epidermal junction). The time course and exposure time‐dependence of SM‐induced lesions for these parameters were characterized in this model and compared with previous results in the haired and hairless guinea pig.