Summary
The authors have studied the quantitative variations of elastic and collagenous fibers, muscle cells and cellular population in the mesarteria of the middle portion of the thoracic aorta of Gallus gallus from 1 day to 36 months of age. A histometric method has been employed, using an integrating eyepiece I (Zeiss Oberkochen) for the countings.
The results obtained show that the concentration of elastic fibers increases from the first to the 30th day of age, decreasing from this point until 36 months while that of the collagenous fibers increases during the first and second period. The muscular tissue increases its concentration from the 30th day to 36th month, while the cellular population decreases from the 15th to 30th day, then remaining, stable until 36 months. From the variations pointed out here for the different elements studied between 30 days and 36 months of age, only those of the eollagenous fibers were linear with age.
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Martins, L.F., Medeiros, L.F., Ferri, S. et al. Histometric study of age related changes in the thoracic aorta of Gallus gallus (Linnaeus, 1758). Z. Anat. Entwickl. Gesch. 131, 347–352 (1970). https://doi.org/10.1007/BF00519975
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DOI: https://doi.org/10.1007/BF00519975