铁元素从血红素中释放出来，要么转化为巨噬细胞中的铁蛋白或含铁血黄素，或通过血液循环回流进入骨髓。
Iron is released from the heme moiety and either stored in the macrophage as ferritin or hemosiderin, or released into the circulation for transport back to the marrow.
大量吞噬有含铁血黄素颗粒的巨噬细胞聚集在一起，连成一片，致使细胞轮廓不清；
Plenty of macrophages were gathered together, resulting in cellular outline to be ambiguous, which phagocytosised amounts of hemosiderin granules.
图示：肺泡内巨噬细胞含铁血黄素沉着（呈褐色粗糙颗粒）。 是红细胞血红蛋白降解后所产生和释放的。
The brown coarsely granular material in macrophages in this alveolus is hemosiderin that has accumulated as a result of the breakdown of RBC's and release of the iron in heme.
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