Sentence:  The international unit ( u . ) , <WSD>adopted</WSD> to make possible the comparison of results from different laboratories ( Mussett and Perry , 1955 ) , has been defined as the amount of activity present in 13.5 mg of the International Standard Preparation . 
Meaning of the word marked with <WSD> tags:  choose and follow; as of theories, ideas, policies, strategies or plans