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We found that as another important compensatory response to intracellular overload of iron ion , cells significantly downregulated the expressions of genes belonging to solute carrier family which are responsible for transferring many organic solutes into cells , such as Slc5a3 and Slc44a1 , in order to prevent more organic solutes into cells and thus lower the intracellular osmosis .
 Chemical: iron
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: iron