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Tubular Extensions of the Plasmalemma in Leaf Cells of Zea mays L.

R.F. Evert, W. Eschrich, D.S. Neuberger and S.E. Eichhorn
Planta
Vol. 135, No. 2 (1977), pp. 203-205
Published by: Springer
Stable URL: http://www.jstor.org/stable/23372934
Page Count: 3
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Tubular Extensions of the Plasmalemma in Leaf Cells of Zea mays L.
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Abstract

Leaf tissues of Zea mays were examined with a transmission electron microscope and a high-voltage electron microscope. Tubular extensions (invaginations) of the plasmalemma were found in vascular parenchyma cells and thick-walled, late-formed sieve elements of intermediate and small veins, and in epidermal, mesophyll, and sheath cells of all leaves examined. No continuity seems to exist between the tubules and other cellular membranes.

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