(1) Silicone coated magnetite of nanometeric size was incorporated in the drug bearing microspheres.
(2) However, two developments during the past decade have changed this perception dramatically, the first being the discovery that many organisms, including humans, biochemically precipitate the ferrimagnetic mineral magnetite (Fe3O4).
(3) The results of this experiment show that the "biological magnetite" is distinctly different from hemosiderin and has characteristic properties when subjected to a magnetic field.
(4) Viable spermatozoa were isolated from magnetite-complexed spermatozoa, but the motility of the isolated spermatozoa deteriorated rapidly during the subsequent capacitation period.
(5) Magnetite (Fe3O4) particles 0.1-0.5 microns in diameter doped with either 99mTc or 111In have been prepared and characterized by electron microscopy and Mössbauer spectroscopy.
(6) The water relaxation ability of ferromagnetic, albumin-coated magnetite (Fe3O4) particles has been investigated.
(7) So far, identification of magnetite in tissue has been mainly based on magnetometry.
(8) By conjugating a monoclonal IgM antibody of CD8-specificity to magnetite-containing polymer particles, we have developed a rapid and simple one-step procedure for positive selection of T8 cells.
(9) A magnetic immobilized lactase has been prepared using magnetite as the magnetic material.
(10) Hydrolytic polymerization of iron(III) occurs in many reactions in vivo, for example, the formation of bacterial magnetite in magnetotactic organisms, biomineralization of iron and the synthesis of the metallic core of the iron-storage protein ferritin.
(11) X-ray diffraction patterns show that the mature denticles of three extant chiton species are composed of the mineral lepidocrocite and an apatite mineral, probably francolite, in addition to magnetite.
(12) The latter structures consist of nanometer-sized magnetite (Fe3O4) cores which are enwrapped by a phospholipid bilayer.
(13) We found significant quantities of single-domain magnetite in connective tissue from the ethmoid region of the skull of adult (4-year-old) sockeye salmon.
(14) The adhesion of cells of Salmonella typhimurium to albite, biotite, felspar, magnetite and quartz was correlated to the presence of fimbriae and degree of hydrophobicity and charge of the bacterial surface.
(15) We suggest that tissue from within the ethmoid region of the skull in pelagic fishes is the only site yet identified where magnetite suitable for use in magnetoreception is concentrated.
(16) This report describes the preparation and characterization of synthetic ferritin-like particles produced by precipitation of magnetite from a mixture of ferrous and ferric ions in the presence of dextran.
(17) The polyvinylamine-magnetite pellicle shielded the external plasma membrane face to proteolysis by papain and pronase.
(18) First, a method to produce a stable condition of hydrostatic pulmonary edema was developed and verified by CT. Second, dose-response curves for coated magnetite preparations were constructed by giving edematous rats varied doses of these preparations and measuring signal intensity changes of various organs by sodium MRI in a 31-cm-bore 1.9-T magnet.
(19) By the smolt stage, the amount of magnetite present in the front of the skull is sufficient to provide the fish with a magnetoreceptor capable of detecting small changes in the intensity of the geomagnetic field.
(20) The carrier consists of human serum albumin microspheres, average of 1 micrometer in diameter, in which a magnetizable material (magnetite) and a prototype drug (doxorubicin) are entrapped.