CD11b⁺ cell populations in RAG^−/− mice.

<p>A, Flow cytometric analysis of CD11b and Ly-6C expression by splenocytes from RAG-1^−/− mice. Gates encompassing the two main cell populations are labeled P1 and P2. B, MHC class II expression by cells contained within gate P1. C, MHC class II expression by cells contained within gate P2.