13177
These results suggest that the adherence/contact of SS RBC to endothelial cells in large vessel can generate enhanced oxidant stress leading to increased adhesion and diapedesis of monocytes , as well as heightened adherence of SS reticulocytes , indicating that injury/activation of endothelium can contribute to vaso-occlusion in SCD .
 endothelial cells, SS RBC, SS reticulocytes, monocytes
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 endothelial cells, SS RBC, SS reticulocytes, monocytes