6446
The aim of the present study was to investigate how the progestins medroxyprogesterone acetate , dydrogesterone and dienogest , as well as progesterone , impact on the expression of genes of pre - receptor progesterone metabolism in Z - 12 epithelial cell line , a model system of peritoneal endometriosis .
 Chemical: progestins; Chemical: medroxyprogesterone acetate; Chemical: dydrogesterone; Chemical: dienogest; Chemical: progesterone; Chemical: progesterone
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: progestins, medroxyprogesterone acetate, dydrogesterone, dienogest, progesterone, progesterone 
Answer:
 Chemical: progestins; Chemical: medroxyprogesterone acetate; Chemical: dydrogesterone; Chemical: dienogest; Chemical: progesterone; Chemical: progesterone