764
However , a cosmid clone containing the entire mouse alpha 1 ( I ) gene , including 3 . 7 kb of 5 ' - and 4 kb of 3 ' - flanking DNA , was expressed at reduced levels in fibroblasts overexpressing oncogenic ras .
 mouse alpha 1 ( I ) gene, oncogenic ras
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 mouse alpha 1 ( I ) gene, oncogenic ras