PSTPIP2 attenuates macrophage proliferation. Proliferation of nonadherent splenocytes (A) or nonadherent BM cells (B) from wt and asymptomatic cmo mice. Triplicate samples with cells harvested from 2 mice/genotype. (C) Growth curves of BAC1.2F5 macrophages retrovirally transduced with MSCV-IRES-GFP vector (empty vector) or MSCV-IRES-GFP-PSTPIP2 (PSTPIP2 OE). The doubling times are presented on the right side of each curve. Data ± SD, n = 3; *P < .01 versus wt, †P < .05 versus wt.