12417
Herceptin , which recognizes the HER - 2 / neu antigen and has similar size ( 10 nm ) to G6 - ( 1B4M - Gd ) ( 256 ) , accumulated and internalized in the WIBC - 9 tumors more quickly than in the control MC - 5 tumors that progress with normal angiogenesis .
 HER - 2, neu
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 HER - 2, neu