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IP-injected rTSR1 reached the tumor. Immunoblot of serum and tumor lysate displayed band at ~10 kDa, corresponding to the molecular weight of rTSR1. The band is observed both in serum (A) and with the whole tumor lysate (B) from mice that received rTSR1 only. The rTSR1 input is used as the positive control. M1 to M3 refer to mouse 1 to mouse 3.
