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Total PTK in lysates in SEB-treated monocyte-plus-lymphocyte cultures. A total of 107 monocytes plus lymphocytes (1:4 ratio) were stimulated with 100 ng of SEB per ml for the time indicated. Total PTK activity in whole-cell lysates is expressed as picomoles of phosphopeptide per minute per microgram of protein. These data do not represent significant differences from controls.
