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, None) , ( cell type: human red blood cells, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( cell type: HRBC, None) , ( cell type: human red blood cells, None) 