1839
Postnatal mortality was increased among experimental animals , and arterial oxygen saturation was 96 + / - 1 % in 1 - day - old control animals and significantly lower ( P < 0 . 01 ) in fluoxetine - exposed pups ( 79 + / - 2 % ) .
 Chemical: oxygen; Chemical: fluoxetine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: oxygen; Chemical: fluoxetine