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We investigated whether combinatorial post - injury treatment with progesterone ( P4 ) and vitamin D hormone ( VDH ) would reduce ischemic injury more effectively than P4 alone in an oxygen glucose deprivation ( OGD ) model in primary cortical neurons and in a transient middle cerebral artery occlusion ( tMCAO ) model in rats .
 Chemical: progesterone; Chemical: vitamin D; Chemical: oxygen; Chemical: glucose
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: progesterone; Chemical: vitamin D; Chemical: oxygen; Chemical: glucose