HISTOGENESIS OF CEREBELLAR CORTEX OF WHITE MICE AFTER BIRTH
- VernacularTitle:小白鼠小脑皮质的生后发育
- Author:
Wei LU
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1955;0(03):-
- CountryChina
- Language:Chinese
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Abstract:
The differentiation of cells types and layers in the cerebellar cortex of 74 white micefrom the time of birth to the adult age were observed by the methods of Nissl, Golgi,Cajal and Golgi-Cox. The external granular layer of the folia of the cerebellar cortex attained the greatestthickness in the fourth on the fifth day; at the same time, mitosis was seen. There after,this layer became gradually thinner; from eighteenth to twentieth day after birth it even-tually disappeared. Some cells of the external granular layer differentiated into granular and stellatecells. The Purkinje cells after birth were in primitive form with perisomatic dendrites.From the eighth day on, perisomatic dendrites became atrophic and disappeared. In thethird week, the Purkinje cells reached the mature stage. The Purkinje cells after birth, besides the ones in their normal position, might befound in the submeningeal spaces, external granular layer, molecular layer, internal granu-lar layer and medulla of the cerebellum. A part of these displaced cells may be origi-nated from the external granular layer. With the disapperance of the external granular layer, the Purkinje cells becamecompletely matured. In accordance the animals in this period began to be able of in-dependent activities, such as running, jumping, etc.
