Row formation and other types of arrangement of cartilage cells in endochondral ossification
Row formation and other types of arrangement of cartilage cells in endochondral ossification
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DOI:
10.1002/ar.1090460409
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发表时间:
1930-09-01
影响因子:
--
通讯作者:
Dodds, GS
中科院分区:
文献类型:
--
作者:
Dodds, GS
The process of row formation was studied in fetuses and young animals of dog, cat, pig, and man. Rows of cartilage cells form by successive divisions of row-mother cells, the first division of which produces 2 flattened cells. Rows of various lengths are produced from these pairs of cells by repeated divisions. The cells remain flat and arranged like piles of coins until the full number of cells in the rows are attained, after which they enlarge greatly, preparatory for the invasion of the marrow. There is no rearrangement of cells during this process. In the divisions of the flattened cells in the rows, each cell gives rise by mitosis to 2 semicircular cells, each of which resumes the discoid form by growth of a wedge-shaped extension past its fellow. In certain situations rows do not form, but the cells are grouped instead in cell nests. In the beginning of the primary center of each bone there is no special grouping, the cells being uniformly distributed, so that their enlargement produces a network of thin trabeculae.