Figure 3.

Treatment of MCF7 cells with K pneumoniae EVs or tamoxifen. Relative cell survival percentages following treatment with K pneumoniae EVs. The cells were treated with distilled water (CTL) or K pneumoniae EVs at 100 ng/ml or 1 μg/ml, DMSO (CTL) with 10 μM Tam, 10 μM Tam plus 100 ng/ml K pneumoniae EVs for 72 h. Surviving cells were counted in a Neubauer chamber. The percentages of viable cells are indicated over each bar. Relative cell survival percentages are shown as percentages of untreated viable cells. ∗∗P < 0.01. CTL = control, EVs = extracellular vesicles, Tam = tamoxifen.