22600
In vitro study demonstrated that the addition of 0 . 5 mM Fe ( 2 + ) and 0 . 1 mM ascorbate caused increase in the production of MDA level in placental tissue with PE than normal placentas , and vitamin E ( 100 micro M ) caused lower inhibition of in vitro lipid peroxidation in placental tissue with PE when compared with normal tissue .
 Chemical: Fe ( 2 + ); Chemical: ascorbate; Chemical: MDA; Chemical: vitamin E
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Fe ( 2 + ); Chemical: ascorbate; Chemical: MDA; Chemical: vitamin E