Analysis of relative expression by qPCR of class 2 terminators. Graphics represent the analysis of the terminator present in each of the pCs (terminator w_109 in TU_09, terminator t_022 in TU_11, terminator t_055 in TU_20, terminator a_207 in TU_58, terminator t_173 in TU_62, terminator a_310 in TU_83, terminator w_093 in TU_105 and terminator w_102 in TU_113). Column “Terminator” shows the level of expression of the primer positioned upstream of the terminator and the column “Extern” represents the data for the primer positioned downstream of the terminator. Data are presented as mean ± standard deviation of three independent experiments. Asterisks indicate statistically significant differences in levels of expression downstream of the terminator; *0.01 < P < 0.05; **0.001 < P <0.01; ***P < 0.001.