Toll-like receptor 1 (TLR1) is a member of Toll-like receptors (TLRs), which is a family of pattern recognition receptors (PRRs) that form the cornerstone of the innate immune system.[5][6][7] TLR1 recognizes bacterial lipoproteins and glycolipids in complex with TLR2. TLR1 is a cell surface receptor.[5] TLR1 is in humans encoded by the TLR1 gene, which is located on chromosome 4.[8]
El-Zayat_2019
was invoked but never defined (see the help page).