"treatment","dilution"
"untreated",800
"untreated",800
"untreated",800
"untreated",800
"untreated",400
"untreated",400
"sham",800
"sham",800
"sham",400
"sham",400
"sham",400
"enhanced",400
"enhanced",400
"enhanced",200
"enhanced",200
"enhanced",200
"enhanced",200
"enhanced",100
"enhanced",100
"enhanced",100
