In animals of HF (159 rearranged sample sequences), the dominant rearrangements were IGHV3/33-IGHD8 (s, BTA21)-IGHJ1 (AY158087) (4.40%), IGHV3/33-IGHDQ52 (s, BTA8)-IGHJ1 (AY158087) (3.77%), IGHV36/29(F)-IGHDQ3 (s, BTA7)-IGHJ1 (AY158087) (3.77%), IGHV3/33-IGHD5 (s, BTA8)-IGHJ1 (AY158087) (3.14%), and IGHV3/33-IGHD1 (s, BTA7)-IGHJ1 (AY158087) (3.14%). Here, RNPC3 is linked to hydrops fetalis.