Effect of prior treatment with thioglycolate on the incubation period of intraperitoneally injected scrapie

Injection of mice with thioglycolate 5 days prior to intraperitoneal injection of scrapie brain homogenate led to a statistically significant increase in scrapie incubation periods. This was seen with two different scrapie strains (ME7 and 139A), in different mouse strains (C57BL/6J and Compton White), and at several dilutions of the scrapie inoculum.