1860
Animals were sacrificed at various times post-dosing until 120 h, spleen was excised and, after incubation of lymphocytes with PHA , splenocyte blastogenic responses were assessed by measuring cellular incorporation of 3H-thymidine .
 cell type: lymphocytes; protein: PHA
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: lymphocytes, PHA 
Answer:
 cell type: lymphocytes; protein: PHA