passages.id: split_5_test_1346_passage
passages.type: progene_text
passages.text: 699T homozygotes lowered tHcy levels 13.6 % on average , compared to 4.8 % lowering in 699C homozygotes ( P = 0.009 ) , while 1080C homozygotes lowered 12.9 % compared to just 2.7 % for 1080T homozygotes ( P = 0.005 ) .