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Expression patterns of TTL1 in Arabidopsis primary root using promoter::GUS analysis from 2 to 5 days post germination in control medium. pTTL1::GUS roots showing GUS signal in the stem cell niche (SCN) from 2 to 4 dpg (arrowheads). At 5 dpg the signal is also localized in the cortex, endodermis, and stela cells in the PM and transition zone (TZ). n = 15.
