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. 2019 May 31;10:1187. doi: 10.3389/fimmu.2019.01187

Figure 5.

Figure 5

CD38 expression in macrophages mediate “inflammaging.” The senescence associated senescent phenotype (SASP) appears to drive the expression of CD38 in macrophages. During inflammaging, CD38+ macrophages accumulate in aging tissues and potentiate the decline of precursors necessary for NAD+ synthesis.