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Polyisobutene (polyisobutylene) is a class of organic polymers prepared by polymerization of isobutene. The polymers often have the formula Me 3 C[CH 2 CMe 2] n H (Me = CH 3). They are typically colorless gummy solids. Cationic polymerization, initiated with a strong Brønsted or Lewis acid, is the typical method for its production.
Mapping of several bone diseases onto levels of vitamin D (calcidiol) in the blood [6] Normal bone vs. osteoporosis. Vitamin D deficiency is typically diagnosed by measuring the concentration of the 25-hydroxyvitamin D in the blood, which is the most accurate measure of stores of vitamin D in the body.
A novel experimental approach to the hereditary haemochromatosis treatment is the maintenance therapy with polymeric chelators. [ 69 ] [ 70 ] [ 71 ] These polymers or particles have a negligible or null systemic biological availability and they are designed to form stable complexes with Fe 2+ and Fe 3+ in the GIT and thus limiting the uptake of ...
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The clinic offers patient care with access to specialists, education programs, and referral to clinical investigations for the prevention and treatment of rheumatic diseases. The Autoimmunity Branch conducts basic and clinical research on the pathophysiology and treatment of autoimmune diseases. Signal transduction pathways that differentiate ...
According to the Mayo Clinic, a Bartholin's cyst forms when the glands become obstructed and cause fluid to back up into the gland. A small, noninfected cyst may go unnoticed — however, if the ...
Treatment usually includes surgery, then radiation, chemotherapy or both, the Mayo Clinic says. Isabella had surgery to remove her tumor on Oct. 27, the day before her 19th birthday, at Los ...
[2] [3] The analogous condition in adults is osteomalacia. The most common cause of rickets is a vitamin D deficiency , although hereditary genetic forms also exist. [ 2 ] This can result from eating a diet without enough vitamin D , dark skin, too little sun exposure, exclusive breastfeeding without vitamin D supplementation, celiac disease ...