Abstract
AbstractTwo types of interleukin 1 (IL‐1α and IL‐1β) have been defined by purifying the molecules from activated human peripheral blood cells, followed by cloning and expressing the molecules in Escherichia coli. Both types of IL‐1 stimulate proliferation and differentiation of T‐ and B‐lymphocytes and induce cartilage proteoglycan degradation but differ in other properties. For example, demineralization and appears to be a major mediator in the pathogenesis of joint erosion in rheumatoid arthritis. Synthetic adjuvants elicit the production of IL‐1 separate from endogenous pyrogen, and this property is required for the new generation of vaccines based on antigens produced by recombinant DNA technology.
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