Enamel
√ Hard and white substance covering the teeth
√ The hardest and most highly mineralized
√ Protects the fragile underlying parts of the teeth
√ Covers the crown and supported by dentin
Component of enamel
√ 96% of enamel : mineral, water, organic material
√ contain two unique classes of proteins amelogenins and enamelins
√ The basic unit of enamel is called
Occlusive aortic disease caused by atherosclerosis
: usually confined to the distal abdominal aorta below the renal arteries
The severity of the symptoms depends on the adequacy of collaterals
With sufficient collateral blood flow
: a complete occlusion of the abdominal aorta may occur without the development of ischemic symptoms.
Acute occlusion in the distal abdomi
degeneration and regeneration of muscle fibers + reaction to those changes (infiltration by fat and connective tissue); no abnormal storage of metabolic products.
4. All symptoms are effects of striated muscle weakness (heart and visceral muscles may also be involved).
5. Weakness becomes progressively worse (i.e. not static – vs. congenital myopathies, metabolic myopathies).
Laboratory Monitoring of Patients with HIV Infection
Patients with CD4+ T cell counts <200/L are at high risk of disease from P. jiroveci, while patients with CD4+ T cell counts <50/L are at high risk of disease from CMV, mycobacteria of the M. avium complex (MAC), and/or T. gondii. Patients with HIV infection should have CD4+ T cell measurements performed at the time of diagnosis and every 3&