passages.id: split_6_test_3310_passage
passages.type: progene_text
passages.text: Associations of polymorphisms in CCL5 ( G-403A ) and its receptor CCR5 ( Delta32 ) , CCL2 ( A-2578G ) and CCR2 ( V64I ) , and CX3CR1 V249I and T280M with coal worker 's pneumoconiosis ( CWP ) were investigated in 209 miners examined in 1990 , 1994 and 1999 .