Assertion: prostaglandin's ring | /r/MadeOf | one double bond
Facets:
Source sentences:
text: PGD2 undergoes a spontaneous (i.e. non-enzymatic) dehydration reaction (i.e. removal of two hydrogen atoms and one oxygen atom [i.e. H 2 O]) across its 9-hydroxyl-carbon 10 region to form a new 9,10 double bond to become PGJ2 possessing a cyclopentenone ring (i.e. the ring contains one double bond) replacing the cyclopentanone ring (i.e. the ring has no double bonds) of PGD2.
text: O]) across its 9-hydroxyl-carbon 10 region to form a new 9,10 double bond to become PGJ2 possessing a cyclopentenone ring (i.e. the ring contains one double bond) replacing the cyclopentanone ring (i.e. the ring has no double bonds) of PGD2.