PTPRC and gastric cancer: We speculated that the immune cell infiltration, a parameter known to be related to GC patient survival, might be different in different histological subtypes and might depend on the extent of intratumoral stroma.22, 23 Our exploratory study using CD45 as pan‐leukocyte marker did confirm a correlation between stroma content, histological subtype, and CD45‐positive immune cells.