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A patch test relies on the principle of a type IV hypersensitivity reaction.. The first step in becoming allergic is sensitization. When skin is exposed to an allergen, the antigen-presenting cells (APCs) – also known as Langerhans cell or Dermal Dendritic Cell – phagocytize the substance, break it down to smaller components and present them on their surface bound major histocompatibility ...
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By March 23, 2020, the number had gone up to almost 1,000 a day, as new laboratories gained the capacity to process test results and various entities donated about 100,000 test kits to the RITM. But the Philippines' overall capacity to test for COVID-19 was still very limited given the national spread of the disease. [89]
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It is designated as the National University Hospital, and the national government referral center. It stands within a 10-hectare (25-acre) site located at the UP Manila Campus in Ermita, Manila. PGH has 1,100 beds and 400 private beds, and has an estimated of 4,000 employees to serve more than 600,000 patients every year. [3]