8420
The maximum (3H)-thymidine incorporation into DNA of cord blood lymphocytes from all preterms , with or without NRDS was suppressed when compared to that from term babies or adults.
 cord blood lymphocytes
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:
 cord blood lymphocytes