RT Book, Section A1 MA, Lichtman A1 MS, Shafer A1 RE, Felgar A1 N, Wang SR Print(0) ID 1138039876 T1 Erythrocyte Egress T2 Lichtman's Atlas of Hematology 2016 YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071602679 LK accessmedicine.mhmedical.com/content.aspx?aid=1138039876 RD 2024/03/29 AB Graphic Jump LocationView Full Size||Download Slide (.ppt)XII.C.001Erythrocyte Egress. Murine Marrow. Enucleate erythrocyte containing ribosomes and a few mitochondria (marrow reticulocyte) is in juxtaposition to marrow sinus wall. At this level, a large segment of adventitial reticular cell cytoplasm prevents most of the erythrocyte from juxtaposing to the abluminal surface of the endothelial lining cell. A probe at the right edge of the erythrocyte is in contact with endothelium and may show very early penetration of endothelial cell. In experimental models pharmacological doses of erythropoietin decreases adventitial cell cytoplasmic cover of the abluminal sinus wall and may improve access of the reticulocyte to the endothelial cell. Sinus lumen (L). (Transmission electron micrograph)