Reactions in vivo and in vitro produced by a soluble substance associated with delayed-type hypersensitivity.
D000818:Animals; D002850:Chromatography, Gel; D046508:Culture Techniques; D006168:Guinea Pigs; D006968:Hypersensitivity, Delayed; D008214:Lymphocytes / Q000032:analysis*; D008264:Macrophages; D008970:Molecular Weight; D012882:Skin Tests