(A) Results of the two-step cluster analysis demonstrating a favorable cluster ratio (<3) and silhouette measure (>0.5) at four fixed clusters. (B) Dendrogram of the hierarchical clustering results (BL: Burkitt’s lymphoma, B-ALL: B cell Acute lymphocytic leukemia, CLL: chronic lympocytic leukemia, T-ALL: T cell Acute lymphocytic leukemia. (C) Graphical distribution of the 247 proteins observed in at least two biological replicates of a cell line (generated using Cytoscape [33]). Color indicates whether the protein is a CD antigen and size is proportional to number of drugs developed against it, as cataloged in ChEMBL, PharmGKB, and Therapeutic Targets Database [34–36].