Brain metastasis PD-L1 and CD8 expression is dependent on primary tumor type and its PD-L1 and CD8 status ========================================================================================================= * Florian Camy * Georgia Karpathiou * Jean Marc Dumollard * Nicolas Magne * Jean Luc Perrot * Francois Vassal * Tiphanie Picot * Mousa Mobarki * Fabien Forest * Francois Casteillo * Sirine Hathroubi * Marios Froudarakis * Michel Peoc'h