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Fig. 6 | BMC Cancer

Fig. 6

From: Insluin and epithelial growth factor (EGF) promote programmed death ligand 1(PD-L1) production and transport in colon cancer stem cells

Fig. 6

Blocking surface PD-L1 inhibits tumour sphere formation. Antibody blocking PD-L1 or isotype antibody (Isotype Ab) was added into the sphere culture medium and the blockage of PD-L1 inhibited the sphere number (P < 0.05, a), compared to both untreated and isotype controls. However, the antibody blocking didn’t affect the sphere size (cells/sphere, b)

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