Spleen of Dasypus hybridus (Mammalia, Dasypodidae): A light and electron microscopic study

Synaptonemal complexes and XY behavior in two species of Argentinian armadillos: Chaetophractus villosus and Dasypus hybridus (Xenarthra, Dasypodidae).

Spermatocytes from the two armadillo species, C. villosus and D. hybridus were studied in microspreads for synaptonemal complexes (SCs) and in thin sections for electron microscopy (EM). The complete SC karyotype generally agrees with previous reports on mitotic chromosomes, except for the sex chromosomes. The X chromosome is submetacentric in both species and the Y is the shortest one in C. vi...

Light and scanning electron microscopic study of the lingual structure in the budgerigar (Melopsittacus undulatus)

BACKGROUND: The tongue, which plays a very important role in food intake by vertebrates, exhibits significant morphological variations that appear to represent adaptation to the current environmental conditions of each respective habitat. OBJECTIVES: The aim of the present investigation was to investigate lingual structure in adult budgerigar. METHODS: Tongues of 12 adult budgerigars were used ...

Light and electron microscopic study of the tongue in the White-eared bulbul (Pycnonotus leucotis)

The aim of the present study was to investigate the light and electron microscopic structure of the tongue in White-eared bulbul (Pycnonotus leucotis). Six adult White-eared bulbul (3 males and 3 females) in Shahrekord district were used in the investigation. Samples of the apex, body and root of the tongue were prepared routinely for light and electron microscopic study. Results showed that th...

A light and electron microscopic study

The corneal stromal lesions of a case of lattice dystrophy that fulfilled all the clinical and histopathologic criteria of this disease were examined by light and electron microscopy. The lesions were found to consist of two distinct parts: (1) a nonbirefringent mass of disoriented filaments of approximately one-third the diameter of normal stronml collagen fibrils and (2) a second, birefringen...

A scanning electron microscopic study of the spleen.