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In the spontaneous abortion group , the levels of PAPP - A were significantly lower than in normal pregnancy but higher than in non - pregnant controls .
 GENE: PAPP - A
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: PAPP - A