Root Hair Cell in 3D using TikZ

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Other (as stated in the work)
A TikZ figure using the beamerposter package. It shows an idealised 3D root hair cell, and its projection onto a 2D rectangular domain. The auxin symplastic pathway is indicated by purple arrows and the longitudinal auxin gradient by a shade in the 2D-domain; influx and efflux permeability arrows, indicating a polarising process, are respectively depicted in orange and light-blue. Switching fluctuation is represented by dark green arrows.
Root Hair Cell in 3D using TikZ