TNF and lymphotoxin are pro- inflammatory cytokines that bind to two distinct cell surface receptors: the 55-kilodalton (p55) and 75-kilodalton (p75) tumour necrosis factor receptors (TNFRs).
55- kilodaltonilise (p55) ja 75- kilodaltonilise (p75) tuumornekroosifaktori retseptoriga (TNFR).