Assertion: osteocyte | /r/CapableOf | produce tumour necrosis
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text: Pathak and co-authors found that osteocytes produce pro-inflammatory cytokines such as tumour necrosis-α (TNFα), interleukin (IL)-6 and IL-1β, key factors in rheumatoid arthritis pathogenesis, which are up-regulated by rheumatoid arthritis -serum treatment in vitro.