Neurocytoma or neuroblastoma, a kind of tumor not generally recognized

Neurocytoma or Neuroblastoma, a Kind of Tumor Not Generally Recognized

The object of this paper is to call attention to a group of tumors, the nature of which has hitherto escaped general recognition, and to point out their distinguishing characteristics. These tumors are rich in cells which may vary nmch in size and shape. They may be pervaded by connective tissue by which the cells are arranged in more or less definite alveoli. Blood vessels accompanied by conne...

Neurocytoma - a rare intraventricular tumor.

Regulation of probiotic substances as ingredients in foods: premarket approval or "generally recognized as safe" notification.

This article discusses options and examples of regulations or "generally recognized as safe" determinations that are related to microorganisms in food. A balanced picture of information about the microorganism and its characteristics is needed to make conclusions about its safety.

Generally Recognized as Safe: Uncertainty Surrounding E-Cigarette Flavoring Safety

Despite scientific uncertainty regarding the relative safety of inhaling e-cigarette aerosol and flavorings, some consumers regard the U.S. Food and Drug Administration's "generally recognized as safe" (GRAS) designation as evidence of flavoring safety. In this study, we assessed how college students' perceptions of e-cigarette flavoring safety are related to understanding of the GRAS designati...

Neurocytoma is a tumor of adult neuronal progenitor cells.

Central neurocytoma (CN) is a rare periventricular tumor, whose derivation, lineage potential, and molecular regulation have been mostly unexplored. We noted that CN cells exhibited an antigenic profile typical of neuronal progenitor cells in vivo, yet in vitro generated neurospheres, divided in response to bFGF (basic fibroblast growth factor), activated the neuroepithelial enhancer of the nes...