| http://www.w3.org/ns/prov#value | - Subsequently, it has been shown that CD30 is an activation antigen that can be expressed by normal lymphoid cells and the neoplastic cells of many lymphoproliferative disorders in addition to ALCL.55 Thus, CD30 antigen does not constitute a unique phenotypic marker of ALCL, and indeed may be negative in bona fide cases.40 Unfortunately, the term ???anaplastic??? is no longer helpful in defining AL
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