a rabbit antiserum against the major internal protein , p27 , of a psoriasis associated retrovirus-like particle has been applied in an immunofluorescence assay for the detection of antigens cross reacting with p27 in patients with psoriatic arthritis , seronegative rheumatoid arthritis , or ankylosing spondylitis .
C0033860
psoriasis
C0003872
psoriatic arthritis