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Development of mitochondrial helical sheath in the middle piece of the mouse spermatid tail: Regular dispositions and synchronized changes
TLDR
Disposition of the mitochondria in the spermatid tail was regular throughout development, which indicates that these mitochondria elongate simultaneously and also at the same rate as the histologic synchronism in differentiating germ cells.
Occlusion and subsequent re-canalization in early duodenal development of human embryos: integrated organogenesis and histogenesis through a possible epithelial-mesenchymal interaction
TLDR
Histogenesis of the duodenum, especially changes in the epithelium in relation to temporal occlusion and re-canalization of the lumen, was investigated by light microscopy together with morphometric analysis and electron microscopic observations suggested a possible control mechanism by the epithelial-mesenchymal interaction on human duodenal morphogenesis and histogenesis.
Lack of changes in brain muscarinic receptor and motor activity of mice after neonatal inhalation exposure to d‐allethrin
TLDR
The neonatal exposure to d‐allethrin by inhalation did not induce effects either on the brain MAChR density and motor activity at 17 days and 4 months or on performance in the learning/memory test at the age of 11 months.
Ultracytochemical studies of capillary endothelial cells in the rat central nervous system.
TLDR
Differences in the intensity of the enzyme activities of the luminal and antiluminal plasma membranes may reflect the polarity in the capillary endothelial cells and relate to blood-brain barrier mechanisms.
Ultrastructural study on the retinal pigment epithelium of human embryos, with special reference to quantitative study on the development of melanin granules.
The development of the retinal pigment epithelium (RPE) was studied ultrastructurally, using 13 externally normal human embryos, Carnegie stages ranging from 13 to 23 (4-8 week of gestation).
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