6. Provision of suitable tumor tissue for the analysis of Axl kinase expression and PD-L1 expression. Suitable tumor tissue must consist of a minimum of newly acquired (fresh) tumor tissue sample (as a FFPE block), together with either further newly acquired tumor tissue (i.e. further FFPE block) or an archival tumor tissue sample (as a further FFPE block or further 10 unstained slides). See Section 5.3.13 for further details.