passages.id: split_6_test_3454_passage
passages.type: progene_text
passages.text: Genes encoding proteins with substantial homology to mammalian TLR1 , TLR2 , TLR3 , TLR4 , TLR5 , and TLR7 are present in the chicken genome , whereas orthologs of TLR8 , TLR9 , and TLR10 seem to be defective or missing .