6088
When Hy - Vac SPF type V embryos were exposed to either 0 . 20 ml 50 % ethanol in CRS or to 0 . 20 ml CRS ( controls ) , ethanol - treated embryos showed a VSD incidence of 34 . 1 % compared with a 3 . 6 % incidence in the controls ( P = 0 . 0017 ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
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