CLEC10A and breast neoplasm: Of about 35 candidate enzymes, 6 were analyzed in preliminary unblot screens using DNA from the T47D breast tumor-derived cell line (data not shown), and BsrI was finally selected for further hybridization screening with reference to overall fragment size distributions (ranging from ~1 kb- > 6 kb) and total number of fragments predicted to contain HML-2 proviral junction sites (as many as 30; discussed further below).