When we compared the activity of the transfected dPRL promoter in PRL- secreting and nonsecreting lymphoid cells , we found that the 3 kb 5'-flanking region of the dPRL promoter did not contain elements restricting expression to only those lymphocytes that produce PRL but allowed expression of fusion reporter genes irrespective of the status of the endogenous PRL gene .
when we compared the activity of the transfected dprl promoter in prl- secreting and nonsecreting lymphoid cells , we found that the 3 kb 5'-flanking region of the dprl promoter did not contain elements restricting expression to only those lymphocytes that produce prl but allowed expression of fusion reporter genes irrespective of the status of the endogenous prl gene .
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