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Heteronemin , a natural product derived from a marine sponge , was tested in vitro regarding its properties to prevent tumour cell intravasation through the lymph - endothelial barrier .
 Chemical: Heteronemin
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: Heteronemin