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Table 1 Comparison of the PRR between human and birds

From: Innate sensing of viruses by pattern recognition receptors in birds

Pattern recognition Human Origin of ligand Chicken Duck/Goose Origin of ligand
receptor (PRR)      
Membrane-bound PRR (TLR)
On plasma membrane TLR1/6/10 Bacteria TLR1La TLR1Lb Not reported Unknown; bacteria
TLR2 Bacteria; Fungus; Parasites; Virus TLR2a TLR2b Present in duck; Not reported in goose Unknown; Bacteria
TLR4 Bacteria; Fungus; Parasites; Virus Present Present Unknown
TLR5 Bacteria Present Not reported in duck; Present in goose Bacteria
TLR11 Bacteria; Parasites Absent Not reported Unknown
Absent   TLR15 Not reported in duck; Present in goose Bacteria; Virus
In intracellular vesicles TLR3 Virus Present Present in duck; Not reported in goose Virus
TLR7 Virus Present Present Virus
TLR8 Virus Pseudogene
TLR9 Virus; Bacteria; Parasites Absent
Absent   TLR21 Not reported Unknown
Cytoplasmic PRR
RLR
  RIG-I Virus Absent Present Virus
MDA5 Virus Present Present Virus
LGP2 Virus Present Present Virus
NLR
NOD NOD1 Bacteria Present Not reported Unknown
NOD2 Bacteria Absent Not reported Unknown