Sentence:  In the presence of a low iodine intake , thyroglobulin labelled in vivo with * * f is found to contain <WSD>more</WSD> mono-iodotyrosine than normal , the amounts of di-iodotyrosine and iodothyronines being correspondingly reduced . 
Meaning of the word marked with <WSD> tags:  (comparative of `much' used with mass nouns) a quantifier meaning greater in size or amount or extent or degree