2295
It was observed that transcript expression of S - adenosylmethionine decarboxylase , as the key enzyme of spermidine / spermine biosynthesis , is coincident with their metabolic levels and is highly upregulated by D - Orn , as opposed to L - Orn .
 Chemical: S - adenosylmethionine; Chemical: spermidine; Chemical: spermine; Chemical: D - Orn; Chemical: L - Orn
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: S - adenosylmethionine; Chemical: spermidine; Chemical: spermine; Chemical: D - Orn; Chemical: L - Orn