aafExpr package:annaffy R Documentation _S_a_m_p_l_e _e_x_p_r_S_e_t _u_s_e_d _f_o_r _d_e_m_o_n_s_t_r_a_t_i_o_n _p_u_r_p_o_s_e_s _D_e_s_c_r_i_p_t_i_o_n: Contains expression values for 250 probe ids with 8 samples. Two covariates are provided. Expression comes from the 'hgu95av2' chip. _D_e_t_a_i_l_s: The data is real but anonymized. 250 genes expression values were chosen at random from an existing exprSet. Another 250 probe ids were selected at random and were assigned to the expression values. That way, expression values do not correspond to the true probe ids. Post-processing was done with 'rma()' in 'affy' 1.2.23.