Sentence:  In the presence of a low iodine intake , thyroglobulin labelled in vivo with * * f is found to contain more mono-iodotyrosine than normal , the <WSD>amounts</WSD> of di-iodotyrosine and iodothyronines being correspondingly reduced . 
Meaning of the word marked with <WSD> tags:  the relative magnitude of something with reference to a criterion