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. 2015 Apr 20;11(4):e1004161. doi: 10.1371/journal.pcbi.1004161

Fig 1. Schematic of Perturbation-Expression Analysis of Cell States (PEACS).

Fig 1

The PEACS pipeline consists of four steps: (1) perturb a heterogeneous population with a genetic or chemical perturbation, (2) profile gene expression, (3) factor the gene-expression matrix, and (4) analyze the factored gene-expression matrix to identify perturbations that altered cell-state proportions. Shown in the lower right is the SVD formula for matrix factorization.