5627
There was no difference in plasma concentrations of PGI2 ( figure 4 ) and TxA2 in patients with normal blood pressure , mild preeclampsia and hypotension , whereas in severe preeclampsia , the plasma concentration of PGI2 was significantly lower ( p < 0 . 001 ) and of TxA2 significantly higher ( p < 0 . 001 ) .
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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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