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Article
Autophagic activity in thymus and liver during aging
Impaired or deficient autophagy is believed to cause or contribute to aging, as well as several age-related pathologies. Thymic epithelial cells had a high constitutive level of autophagy. The autophagic proce...
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Article
Linkage between melanocytic tumor development and early burst of Ret protein expression for tolerance induction in metallothionein-I/ret transgenic mouse lines
We examined the basis of the all or none difference in inducing melanocytic tumor development among three transgenic mouse lines (304, 192 and 242) to which the same promoter-enhancer (metallothionein-I) and o...
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Article
Transgenic mouse model for skin malignant melanoma
We report here on a novel metallothionein-I (MT)/ret transgenic mouse line in which skin melanosis, benign melanocytic tumor and malignant melanoma metastasizing to distant organs develop stepwise. The process of...