单核细胞稍微比淋巴细胞大，并有带褶皱的核。在细胞因子的影响下单核细胞从血流中迁移到组织中，成为巨噬细胞。在RBC之间可见很多小的污垢样的蓝色血小板。
Here is a monocyte. It is slightly larger than a lymphocyte and has a folded nucleus. Monocytes can migrate out of the bloodstream and become tissue macrophages under the influence of cytokines. Note the many small smudgy blue platelets between the RBC's.
