Sentence:  Treatment of the conjugates with ethyl acetate , and the conjugates ( which had been passed through Dowex-2-chloride ) with mouse liver powder , sweet clover crown gall tissue powder , or <WSD>healthy</WSD> sweet clover proteins did not satisfactorily remove nonspecifically staining substances in the conjugates . 
Meaning of the word marked with <WSD> tags:  having or indicating good health in body or mind; free from infirmity or disease