passages.id: split_6_test_2103_passage
passages.type: progene_text
passages.text: Here we evaluated the apoE phenotype distribution and apolipoprotein e allele frequencies in 55 adult patients with seropositive , erosive RA with amyloid and compared them with 55 matched RA patients without amyloid The apoE isotypes were determined by isoelectric focusing and immunoblotting .