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. 2021 Apr 27;22(9):4573. doi: 10.3390/ijms22094573

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(A) Nitrate concentrations in the xylem sap (a) and in each part (b) of the soybean plant. (B) Ammonium concentrations in the xylem sap (a) and in each part (b) of the soybean plant. N.A: not available; N.D: not detected.

(A) Nitrate concentrations in the xylem sap (a) and in each part (b) of the soybean plant. (B) Ammonium concentrations in the xylem sap (a) and in each part (b) of the soybean plant. N.A: not available; N.D: not detected.