5496
We have investigated the putative role of rho proteins from Aplysia californica as transforming GTPases utilizing the wild - type and a Val - 14 mutant , equivalent to the oncogenic Val - 12 mutation of ras genes found in animal and human tumors .
 tumors
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 tumors