Fig 1: Analysis of apoptosis associated proteinsNo expression of RIPK1 (A–C) or MLKL (D–F) was present in tumours collected from mice that had been treated with placental micro-EVs (A,D) or nano-EVs (B,E), compared with untreated (C,F). Positive staining controls of spleen for the RIPK1 (G) and MLKL (H) antibodies. (I): antibody control. Bar = 100 µm. The consistent finding was seen in tumour tissues collected from five untreated mice, and three micro-EVs treated, and five nano-EVs treated mice