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Analysis of AtNHX1 expression under salt stress. RNA tissue blot hybridized with AtNHX1. Ten micrograms of total RNA from 15-day-old plants exposed to 250 mM NaCl or KCl for 6 h and a control grown without salt was subjected to electrophoresis on a denaturing formaldehyde gel. The blot was hybridized with a probe internal to AtNHX1 ORF. An 18S ribosomal probe was used as loading control.
