The preparation of a high-temperature superconductor based on the Y-Ba-Cu-based system without th... more The preparation of a high-temperature superconductor based on the Y-Ba-Cu-based system without the use of any extraneous oxygen is reported. Using starting materials with a maximum possible oxygen content of 3.5 oxygen atoms per formula unit of the end product and ...
Cytologic features of aspiration smears from a mucus-producing medullary carcinoma of the thyroid... more Cytologic features of aspiration smears from a mucus-producing medullary carcinoma of the thyroid are described. Two patterns of mucin production by the tumor cells were noted. In some cells, mucin was present as numerous small cytoplasmic vacuoles with ultrastructural morphology characteristic of mucin granules. Other cells had larger, more well-defined cytoplasmic mucin vacuoles; on ultrastructural examination, they were found to be intracytoplasmic lumina. Although mucin production has been demonstrated in several histologic studies of medullary carcinoma, it has not been previously recognized in fine-needle aspiration biopsies from this neoplasm.
The preparation of a high-temperature superconductor based on the Y-Ba-Cu-based system without th... more The preparation of a high-temperature superconductor based on the Y-Ba-Cu-based system without the use of any extraneous oxygen is reported. Using starting materials with a maximum possible oxygen content of 3.5 oxygen atoms per formula unit of the end product and ...
Cytologic features of aspiration smears from a mucus-producing medullary carcinoma of the thyroid... more Cytologic features of aspiration smears from a mucus-producing medullary carcinoma of the thyroid are described. Two patterns of mucin production by the tumor cells were noted. In some cells, mucin was present as numerous small cytoplasmic vacuoles with ultrastructural morphology characteristic of mucin granules. Other cells had larger, more well-defined cytoplasmic mucin vacuoles; on ultrastructural examination, they were found to be intracytoplasmic lumina. Although mucin production has been demonstrated in several histologic studies of medullary carcinoma, it has not been previously recognized in fine-needle aspiration biopsies from this neoplasm.
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