Contact: Richard Hund
American Journal of Botany
Caption: On the left (A), the rays are filled with the tracer, on the right (B) they are free of the dye. F = fusiform cambial cell; arrowhead = cambial ray.
Credit: Courtesy of Katarzyna Sokołowska, Institute of Experimental Biology, University of Wrocław, Wrocław, Poland.
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