CD44 and neoplasm: Receptors CD44 and NPR1 had considerably greater inferred activity in tumor core (ranked #3 and #4, respectively, in core and #6 and #15, respectively, in periphery) whereas CSF1R and CCR1 were considerably more abundant in receptor periphery (ranked #5 and #3 ,respectively, in periphery and #17 and #16, respectively, in core).