Comparison of the E1 values for sperms cells, fibroblasts, cortex and ES cells. (A-F) Scatter plots of eigenvectors. The E1 values are highly similar in fibroblasts and sperm cells. The x- and y-axes indicate the E1 values from sperm and fibroblasts (A); sperm and ES cells (ESC) (B); sperm and cortex (C); fibroblasts and ES cells (D); fibroblasts and cortex (E); ES cells and cortex (F). The line represents the linear trend for the obtained values.