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The uptake of zinc, an essential nutrient, is critical for cell proliferation. On the basis of the idea that zinc uptake can be an index of viability in proliferating cells, tumor imaging with (65)Zn was performed using autoradiography. After s.c. implantation of ascites hepatoma (AH7974F) cells into the dorsum, 1 h after i.v. injection of (65)ZnCl(2), (65)Zn uptake in the tumor was higher than...

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