Activation of PI3K and deletion of p53 in keratin 15-expressing mouse mammary cells induces tumor heterogeneity and plasticity modeling metaplastic breast cancer. - Nguyen KA; McLemore LE; Ke Y; DePledge LN; Smith LP; Bian L; Aleman JD; Debretsion D; Wong E; Manning N; Wang XJ; Young CD (The Journal of pathology, 2025)