1669
Concentrations achieved in vivo in tumors lead to single - agent anti - tumor activity at non - toxic doses .
 Anatomy: tumors; Anatomy: tumor
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: tumors; Anatomy: tumor