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 exprSet 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 the PM-only method in dChip after
     normalization using the Invariant Set Method (Li and Wong, 2001).

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

     Scholtens et al.  Analyzing Factorial Designed Microarray
     Experiments.  Journal of Multivariate Analysis.  To appear.

_R_e_f_e_r_e_n_c_e_s:

     Li and Wong (2001).  Model-based analysis of oligonucleotide
     arrays: Expression index computation and outlier detection.  PNAS.
     98:31-36.

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

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

