D-cellotetraose + O2 <=> D-cellotetraono-1,5-lactone + H2O2
d-cellotetraose + o2 <=> d-cellotetraono-1,5-lactone + h2o2
D-cellotetraose + O2 <=> D-cellotetraono-1,5-lactone + H2O2
d-cellotetraose + o2 <=> d-cellotetraono-1,5-lactone + h2o2