estrogen             package:factDesign             R Documentation

_M_i_c_r_o_a_r_r_a_y _D_a_t_a _f_r_o_m _a_n _E_x_p_e_r_i_m_e_n_t _o_n _B_r_e_a_s_t _C_a_n_c_e_r _C_e_l_l_s

_D_e_s_c_r_i_p_t_i_o_n:

     Gene expression levels for 500 genes from a 2x2 factorial
     experiment on MCF7 breast cancer cells using Affymetrix HGU95av2
     arrays.

_U_s_a_g_e:

     data(estrogen)

_F_o_r_m_a_t:

     An ExpressionSet object with 500 genes, 8 samples, and 2
     variables.

_D_e_t_a_i_l_s:

     The factors in this experiment were estrogen (ES: P or A) and
     length of exposure (TIME: 10 or 48 hours).   Gene expression
     values were estimated using rma after quantile normalization (see
     the 'affy' package).  Expression estimates are reported log base
     2, as suggested by the rma method.

_S_o_u_r_c_e:

     Scholtens et al.  Analyzing Factorial Designed Microarray
     Experiments.  Journal of  Multivariate Analysis. 
     2004;90(1):19-43.

_E_x_a_m_p_l_e_s:

     data(estrogen)
     pData(estrogen)
     exprs(estrogen)[1,]

