Task: Named Entity Recognition
Input (English):  The in vitro effect of G - CSF and corticosteroids on granulopoiesis was evaluated in clonogenic assays of marrow mononuclear cells , by proliferation studies of the murine myeloid cell line 32D expressing the patient ' s mutated G - CSFR , and by measuring STAT5 activation in nuclear extracts from stimulated cells .
Output (English): G - CSF