568
Increasing levels of serum bFGF and VEGF were associated with progressive disease ; five of six men who demonstrated a fall in PSA also showed a decline in bFGF and VEGF levels , and three of four men with a rising PSA showed an increase in both growth factors .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 None