Investment materialspayal singhThe document provides information on dental casting investments. It discusses the lost wax technique for metal casting, which involves making a wax pattern, investing it with dental casting material, and burning out the wax to leave a mold for molten metal. Gypsum-bonded investments are commonly used for casting gold alloys. They consist of silica refractory material bound with calcium sulfate. The investments undergo setting expansion during hardening and thermal expansion during heating to compensate for metal shrinkage. Factors like water-to-powder ratio, silica content, heating temperature, and cooling affect the investments' expansion and strength properties.
Immune response Хавдрын эсрэг дархлааны механизм Батхүү БатдоржДокумент описывает механизмы противораковой иммунной реакции, включая три основных этапа: уничтожение опухолевых клеток, уклонение от иммунного распознавания и иммуносупрессия. Основные клетки, участвующие в этом процессе, включают цитотоксические T-клетки, NK-клетки и активированные макрофаги, которые взаимодействуют с опухолевыми антигенами и вызывают их уничтожение. Также упоминается, что различные цитокины играют ключевую роль в активации этих клеток и формировании иммунного ответа против рака.
Sickle cell anemiakwelton90Sickle Cell Anemia is a genetic disorder caused by irregularly shaped red blood cells that are fragile and can block blood vessels, damaging organs and tissues and causing pain. It is inherited as a recessive trait, requiring both parents to carry the gene for a child to be affected. Symptoms include pain, fatigue, swelling, infections, and organ damage. While there is no cure, treatment focuses on pain management and preventing further cell clumping through therapies to keep blood flowing.
Allergy and anesthesiadoctorabouleilaThe document summarizes basic immunologic principles including the humoral and cellular immune responses, antigen presentation, T and B cell differentiation, antibody structure and function, roles of monocytes/macrophages, neutrophils, eosinophils, basophils and mast cells, cytokines/interleukins, complement proteins, and their involvement in inflammation and allergic responses.
18. Identifying HS-I: Allergy Testing
• skin test: small doses of allergen
– look for wheal & flare
• measure IgE levels
19. Treatment for HS-I Disorders
• avoid allergen (Rx can get worse each time
• drugs
– anti-histamines (not Abs) compete w. histamine for receptors
– epinephrine – best immediate trt for anaphyl. shock
• reverses effects of granules (vasoconstriction, relaxes
muscles)
• quick acting, but short duration
– cortisone blocks histamine synthesis
