Dr. Sater’s laboratory is located directly across the hallway from Dr. Allen’s laboratory and formalin-fixed parrafin-embedded (FFPE) tissue blocks or cut slides will be delivered by hand from Dr. Allen to Dr. Sater 5.1.2 To determine T cell receptor (TCR) clonality DeepTCR sequencing will be performed via the Adaptive ImmunoSeq Platform by the Frederick Genomic Core Facility managed by Dr. Xiaolin Wu.