
Lane 1: Human SIRPα, hFC-His tagged protein without freeze-thaw treatment
Lane 2: Human SIRPα, hFC-His tagged protein after one freeze-thaw cycle
Lane 3: Human SIRPα, hFC-His tagged protein after three freeze-thaw cycle
Lane 4: Human SIRPα, hFC-His tagged protein after five freeze-thaw cycle