Histopathological investigation of malignant thyroid and adrenal tumor

Histopathology of age related spontaneous tumor of thyroid and adrenal in rats. These tumors were spontaneous highly malignant with metastasis to remote sites and they are very important in ageing rats and could be of highly beneficial effect of those tumors in incidence in man and women and there relation to age.These studies they give very important research data on thyroid and adrenal tumors. Finally those tumor they start when rats were over one year of age and continue till and of life span of animal which about two years or over.