Sentence:  In the presence of a low iodine <WSD>intake</WSD> , thyroglobulin labelled in vivo with * * f is found to contain more mono-iodotyrosine than normal , the amounts of di-iodotyrosine and iodothyronines being correspondingly reduced . 
Meaning of the word marked with <WSD> tags:  the process of taking food into the body through the mouth (as by eating)