Page 37 - Clinical Hematology Atlas
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CHAPTER 3  ERYTHROCYTE MATURATION   21

                                                PRONORMOBLAST
                                                  Proerythroblast
                                                    Rubriblast

                                                                              Nucleolus
                                                                  Cytoplasm




                                                                    Golgi

                                                                    Nucleus
                                                                  B
                                                             FIGURE 3–2B  Schematic of pronormoblast.
                      A
                       FIGURE 3–2A  Pronormoblast.

               SIZE:  12-20 mm
               NUCLEUS:  Round to slightly oval
               Nucleoli:  1-2
               Chromatin:  Fine
               CYTOPLASM:  Dark blue; may have prominent Golgi
               N/C RATIO:  8:1
               REFERENCE INTERVAL:
               Bone Marrow:  1%
               Peripheral Blood:  0%










                                                             C
                                                           FIGURE 3–2C  Electron micrograph of pronormo-
                                                           blast (315,575).
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