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Most PtenΔ tumors - derived from both MMTV-Cre:Ptenf/f and WAP-Cre:Ptenf/f mice - clustered with ~half of PIK3CAH1047R tumors previously classified as class14Ex (red box). The cluster of PIK3CAH1047R tumors immediately left to the red box represents squamous-likeEx tumors (blue box).
