ISSN:
0003-276X
Keywords:
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Medicine
Notes:
The postnatal growth of the mouse pineal was studied quantitatively. The volume was estimated by means of a histometric method in serial histological sections. During postnatal development the pineal showed no sex difference in absolute size. The growth in volume gradually increased from birth to 40 days, reamained the same for a short period between 40 and 60 days, and after 60 days again increased until 90 days when it finally attained the adult volume. From 90 to 210 days it remained almost constant.The pineal weight was calculated from the volume by means of a weight-volume ratio of the cerebral tissue. The pineal growth during early postnatal period, especially the first ten days, is attributed to both proliferation and enlargement of pineal cells, but after 20 days, primarily to enlargement. Differentiation of the pineal was estimated quantitatively on the basis of nuclear changes in shape characteristic of the pineal cells.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/ar.1091590413
