Cambial Surface Showing Different States of Symplasmic of Cell-To-Cell Conductivity (image) Botanical Society of America Share Print E-Mail 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. Usage Restrictions Cite original source of publication and credit line. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.