Definition: Given an abstract, generate a keyword (a noun phrase) that best describes the focus or contribution of the paper. Such keywords can be directly from the given abstract or outside it.
Input: Abstract: Paired maternal and umbilical vein blood samples were obtained from 15 women and the plasma antithrombin III activity and fibrinopeptide A concentration measured. Women with preeclampsia had significantly lower antithrombin III activities and higher fibrinopeptide A concentrations (P less than .05) than normals. However, there were no significant differences between the two groups of fetuses. Thus, thrombin generation was not increased in the fetuses delivered from preeclamptic women.

Antithrombin III