Biomedical subjects
Publications and source records attributed to C L Valdez Toledo.
An experiment was designed to determine the relation between the hypofunction of the thyroid gland and the structure of the epididymis. The hypothyroid condition was associated with decreased mitosis, insufficient vascularization, decreased nuclear size, and chromatin decondensation. In thyroidectomized rats injected with T3, no morphological changes in the epididymis were observed.
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Based on a series of macroscopic and histological observations, during an annual cycle, the main stages of oogenesis in Bufo arenarum (Hensel) have been recognized, pointing out the most significant features. The analysis has established five characteristic stages which permit the individualization of the maturation stage of the oocyte in the ovary. All the information obtained has provided the possibility of drawing up a synthetic table so that the oogenetic stages of this amphibian species, very much used in Argentine experimentation, could be easily recognized.