2629
Agents under development include growth factor receptor inhibitors , small molecules targeting signal transduction pathways , apoptosis and cell - cycle regulators , angiogenesis and metastasis inhibitors , differentiation agents , telomerase inactivators , and epigenetic therapeutics .
 cell
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 cell