1954
To study putative teratogenic effects of a T cell-mediated immune response versus an endotoxic challenge , 10-d-pregnant rats received a single intraperitoneal injection of 5 x 10(8) human red blood cells ( HRBC ) or gram-negative bacterial endotoxin ( Escherichia coli LPS : 30 micrograms/kg).
 cell type: HRBC; cell type: human red blood cells
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: HRBC, human red blood cells 
Answer:
 cell type: HRBC; cell type: human red blood cells