610
Here , it is shown that mouse embryonic stem cells deficient in BRCA1 are defective in the ability to carry out transcription - coupled repair of oxidative DNA damage , and are hypersensitive to ionizing radiation and hydrogen peroxide .
 Disease: deficient in BRCA1
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: deficient in BRCA1