7025
We show that dcd strains suffer from increased intracellular levels of dCTP ( 4 - fold ) and reduced levels of dGTP ( 2 - fold ) , while displaying , as measured using a set of lacZ reversion markers in a mismatch - repair defective ( mutL ) background , a strong mutator effect for G . C --> T . A and A . T --> T . A transversions ( 27 - and 42 - fold enhancement , respectively ) .
 Chemical: dCTP; Chemical: dGTP
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: dCTP; Chemical: dGTP