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Immunoelectron Microscopy in Frozen Sections of Leaf Tissue.
(A) Immunogold localization of the DS9 protein in a tobacco mesophyll cell treated with antibodies raised against DS9ΔN and 10-nm gold-conjugated anti–rabbit IgG. 
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(B) A tobacco mesophyll cell treated with preimmune serum and 10-nm gold-conjugated anti–rabbit IgG. 
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(C) Greater magnification of (A). 
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