Comparative Study of Mandible Ramus Morphology Using 3-dimensional CT in Sagittal Split Ramus Osteotomy.

The purpose of the present study was to investigate the relevance of the external morphology of the mandibular ramus, internal bone tissue structure, and maxillofacial morphology at the site for sagittal split ramus osteotomy among different facial skeletal patterns. A total of 80 patients with jaw deformities who underwent sagittal split ramus osteotomy were included in the study. The patients were divided into two groups based on facial skeletal type (skeletal Class II or skeletal Class III).

Individualization of nano-sized plant cellulose fibrils by direct surface carboxylation using TEMPO catalyst under neutral conditions.

A new catalytic oxidation using 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO) and NaClO is applied to hardwood cellulose in water at 60 °C and pH 6.8 with NaClO(2) used as a primary oxidant. The oxidized celluloses with carboxylate content of approximately 0.

Distinct morphological and immunohistochemical features and different growth rates among four human neuroblastomas heterotransplanted into nude mice.

To elucidate more precisely the biological characteristics of neuroblastomas, we examined four human neuroblastomas heterotransplanted into athymic nude mice NB-39 (undifferentiated type), NB-45 (poorly differentiated type with undifferentiated component), NB-52 (poorly differentiated type), and NB-726 (differentiating type) by electron microscopy, immunohistochemistry, and radioimmunoassay for the peptides in tumors. Ultrastructurally, NB-45, NB-52, and NB-726 contained more numerous and variously sized neurosecretory granules than did NB-39. Immunohistochemistry revealed neurofilament proteins, tyrosine hydroxylase, neuropeptide Y (NPY), and chromogranin A-positive cells in the four tumors in the following order of frequency: NB-726, NB-45, NB-52, and NB-39.