ERBB2 and breast cancer: Our results demonstrate improved adaptation of Her2-positive BC cells (BT-474, HCC-1954, JIMT-1) versus TNBC (MDA MB 231, MDA MB-468, MDA MB-157), Her2-negative cells (MCF-7), and a nonmalignant breast cell line (MCF-10A) to hypoxic conditions utilizing both MTT (Fig. 1a) and [3H]-thymidine uptake assays (data not shown).