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Title: Erythropoietic bone marrow in the pigeon: Development of its distribution and volume during growth and pneumatization of bones

During postnatal development of the pigeon, a large portion of the skeleton becomes pneumatized, displacing the hemopoietic bone marrow. The consequences of pneumatization on distribution and quantity of bone marrow as well as the availability of other sites for hemopoiesis have been investigated. Hemopoietic marrow of differently aged pigeons divided into five groups from 1 week posthatching (p.h.) up to 6 months p.h. was labeled with Fe-59 and examined by serial whole-body sections. Autoradiography and morphometry as well as scintillation counts of single bones and organs were also carried out. No sign of a reactivation of embryonic sites of erythropoiesis was found. Bone marrow weight and its proportion of whole-body weight increased during the first 4 weeks p.h. from 0.54% to 2.44% and decreased in the following months to about 1.0%. The developing bone marrow showed a progressive distribution during the first months of life, eventually being distributed proportionally over the entire skeleton, except for the skull. At the age of 6 months p.h. bone marrow had been displaced, its volume decreasing in correlation to increasing pneumaticity and conversion to fatty marrow. This generates the characteristic pattern of bone marrow distribution in adult pigeons, which shows hemopoietic bone marrow inmore » ulna, radius, femur, tibiotarsus, scapula, furcula, and the caudal vertebrae.« less
Authors:
 [1]
  1. (Institut fuer Anatomie und Zytobiologie der Justus-Liebig-Universitaet Giessen (Germany, F.R.))
Publication Date:
OSTI Identifier:
7025984
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Morphology; (USA); Journal Volume: 203:1
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; BONE MARROW; TISSUE DISTRIBUTION; SKELETON; CELL DIFFERENTIATION; AUTORADIOGRAPHY; ERYTHROCYTES; HEMATOPOIETIC SYSTEM; IRON 59; MORPHOLOGY; PIGEONS; SCINTILLATION COUNTING; ANIMAL TISSUES; ANIMALS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BIOLOGICAL MATERIALS; BIRDS; BLOOD; BLOOD CELLS; BODY; BODY FLUIDS; COUNTING TECHNIQUES; DAYS LIVING RADIOISOTOPES; DISTRIBUTION; EVEN-ODD NUCLEI; INTERMEDIATE MASS NUCLEI; IRON ISOTOPES; ISOTOPES; MATERIALS; NUCLEI; ORGANS; RADIOISOTOPES; TISSUES; VERTEBRATES 550801* -- Morphology-- Tracer Techniques