NewslettersDermal Cell News Multiple Predictive Biomarker Testing in Melanoma: Another Challenge for the Optimal Approach on Cytological Samples By Laurisa Dohm - January 23, 2023 0 To examine the utility of fine-needle cytology for PD-L1 assessment, researchers evaluated the cellular adequacy of residual cell block material from metastatic melanomas previously tested for BRAF and NRAS mutations. [Cytopathology] Abstract