To provide a technique which enables an effective antibody therapy for cancer which targets for {HEAD ~ FGFR1} without the need of using any effective antibody having high specificity and {TAIL ~ a potent cell killing activity} 
To provide a technique which enables an effective antibody therapy for cancer which targets for { HEAD ~ FGFR1 } without the need of using any effective antibody having high specificity and { TAIL ~ a potent cell killing activity }
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