1948
This in vitro morphogenesis was inhibited by the addition of anti - sialyl Le ( x ) / Le ( a ) or anti - beta ( 1 ) - integrin antibodies , which led to the formation of cancer cell aggregates that were independent from the F - 2 cell networks .
 cancer cell aggregates, F - 2 cell
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 cancer cell aggregates, F - 2 cell