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The subgranular zone (in rat brain). (A) Regions of the dentate gyrus: the hilus, subgranular zone (sgz), granule cell layer (GCL), and molecular layer (ML). Cells were stained for doublecortin (DCX). (B) Closeup of subgranular zone, located between the hilus and GCL, [33] a site of adult neurogenesis. Phenotypes of proliferating cells in the ...
The hippocampus is a structure in the brain that has been associated with various memory functions. It is part of the limbic system, and lies next to the medial temporal lobe. It is made up of two structures, the Ammon's Horn, and the Dentate gyrus, each containing different types of cells. [1]
The MNTN is located in the brainstem, more specifically (sources vary) spanning the length of the midbrain [2] /in the caudal midbrain and rostral pons. [1] It is situated (sources vary) near [ 1 ] /within [ 2 ] the periaqueductal gray , lateral to the cerebral aqueduct .
The dentate forms the largest pathway between the cerebellum and the remainder of the brain. [1] It is the largest and most lateral of the four pairs of deep cerebellar nuclei , the others being the globose and emboliform nuclei, which together are referred to as the interposed nucleus , and the fastigial nucleus.
The axolotl is less commonly used than other vertebrates, but is still a classical model for examining regeneration and neurogenesis. Though the axolotl has made its place in biomedical research in terms of limb regeneration, [19] [20] the model organism has displayed a robust ability to generate new neurons following damage.
The primary teeth typically erupt in the following order: (1) central incisor, (2) lateral incisor, (3) first molar, (4) canine, and (5) second molar. [45] As a general rule, four teeth erupt for every six months of life, mandibular teeth erupt before maxillary teeth, and teeth erupt sooner in females than males. [ 46 ]
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This process begins during tooth development after the initial formation of dentin (dentinogenesis), the layer beneath the enamel. [2] The inner enamel epithelium (IEE), a layer of cells within the developing tooth, plays a crucial role by signaling the differentiation of specialized cells called ameloblasts , [ 3 ] which then secrete the ...