At days 9 and 15, we observed a higher proportion and absolute number of Zbtb32-/- compared to WT P14 cells (Fig 3A), as well as a greater proportion of Zbtb32-/- P14 cells expressing the memory markers CD27 and CXCR3 [28,29] at day 9 post-infection (Fig 3B, top). Here, CD27 is linked to infection.