Magnetically responsive composition for carrying biologically active substances and methods of production and use
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United States of America Patent
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Jul 29, 1997
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Jan 29, 1993
priority date (Note) -
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Abstract
A magnetically controllable, or guided, carrier composition and methods of use and production are disclosed, the composition for carrying biologically active substances to a treatment zone in a body under control of a magnetic field. The composition comprises composite, volume-compounded ferrocarbon particles of 0.2 to 5.0 .mu.m in size, and preferably between 1.0 and 4.0 .mu.m, containing 1.0 to 95.0% by volume of carbon, and preferably between about 20 and 50%. The particles are produced by a joint deformation of a mechanical mixture of iron and carbon powders. The obtained particles are placed in a solution of a biologically active substance to absorb the substance onto the particles. The combination is administered in suspension.
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