“…In addition, detailed sequence analyses of Alu repeats mapping near human, chimpanzee, and orangutan globin genes show that Alu repeats are neither especially mobile nor subject to sequence conversion by putative master sequences (13,22,23). Of 400 sequenced Alu repeats in the data base, 3 (including the tissue plasminogen activator [TPA] Alu and Mlvi Alu used in this study) are polymorphic insertions into the human genome (7,8,29).…”