(1) It was confirmed that not only the environmental Al concentrations but also certain chemical and physical characteristics (particle size, allotropic state, solubility), simultaneous exposure to other dusts, and mode of exposure (existence of exposure peaks) play a significant role in lung absorption of Al.
(2) The compound classes detected in the environmental samples are three allotropes of sulphur, three thioethers, five sulphones, six thiophenes, one thiol, two sulphonamides and one thiazole.
(3) These results indicate (a) that the allotropic variants of minute virus of mice may be useful tools to dissect molecular mechanisms of parvovirus virulence, (b) that the virulence of MVMi for neonatal mice does not reside in its lymphotropism, and (c) that genetic susceptibility to lethal MVMi infection may result from overproduction of noninfectious virus products.
(4) Allotropic differences in the modulatory effects of ATP, Mg2+, EDTA and dithiothreitol on the membrane-bound and solubilized enzyme activity are discussed.
(5) MVM(1035), a chimera which had the allotropic determinant of virulent MVMi inserted onto an MVMp background, caused a lethal infection and renal papillary infarcts, the hallmark of MVMi infection.
(6) Synthetic allotropic carbons have been used for nearly 20 years as biomedical implants.
(7) Vitreous carbon, an allotropic form of carbon, may have a potential for the construction of implants.
Allotropy
Definition:
(n.) The property of existing in two or more conditions which are distinct in their physical or chemical relations.