6774
Initial uptake rate and steady - state cell - to - medium ratio of [ ( 3 ) H ] MTX were correlated with both RFC1 expression level and MTX sensitivity .
 Chemical: [ ( 3 ) H ] MTX; Chemical: MTX
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: [ ( 3 ) H ] MTX; Chemical: MTX