Cluster display of expression data from TS and DT cells. Entire data set from MGU74Av2 chips (A) or hemostasis related probe sets (B) is represented. Rows represent data for each probe set; columns represent experiments. Expression values are normalized to the median of all measurements for a probe set. Below median value are colored green (down-regulated); above median value are colored red (up-regulated); median values (unchanged) are colored black. Lighter colors reflect probe sets with lower median expression values. Black, white, and gray boxes represent present, absent, and marginal expression status of probe sets in DT cells. The vertical bar in panel A indicates a cluster of genes up-regulated during trophoblast differentiation. This cluster contains 16 hemostasis-related genes highlighted by the vertical bar in panel B. Horizontal marks to the right of panel A indicate the position of hemostasis-related genes.