Sentence:  After drying the sections under the fan , fixing in acetone , and drying at 37 ` as in the indirect <WSD>method</WSD> , the sections were treated with conjugated * * f or * * f ( undiluted unless mentioned otherwise ) for 5 - 30 minutes . 
Meaning of the word marked with <WSD> tags:  a way of doing something, especially a systematic way; implies an orderly logical arrangement (usually in steps)