增強免疫力保健食品 相關
廣告全天然發酵 數十種高濃度消化酵素，蛋白質含量高達53.2公克/100公克，分子量小 人體容易吸收。 類胡蘿蔔素含量是胡蘿蔔的1.5倍 維生素B12含量是豬肝的4倍 鐵含量是菠菜的23倍，營養完整豐富。
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Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. [9] It is mainly used as a eugeroic ( wakefulness promoter) or as a mild cognitive enhancer to increase alertness and attentional performance. [10] [11] Caffeine acts by blocking binding of adenosine to the adenosine A 1 receptor, which enhances release of the ...
Budget. $6.83 billion (2024–25) Website. who.int. The World Health Organization ( WHO) is a specialized agency of the United Nations responsible for international public health. [2] It is headquartered in Geneva, Switzerland, and has six regional offices [3] and 150 field offices worldwide. [4] The WHO was established on April 7, 1948, and ...
- WHO
- 7 April 1948; 75 years ago
- $7.96 billion (2020–21)
- United Nations Economic and Social Council
Structure of a typical L-alpha-amino acid in the "neutral" form Amino acids are organic compounds that contain both amino and carboxylic acid functional groups.[1] Although over 500 amino acids exist in nature, by far the most important are the 22 α-amino acids incorporated into proteins.[2] Only these 22 appear in the genetic code of life.[3 ...
Scanning electron micrograph of HIV-1, colored green, budding from a cultured lymphocyte. HIV is the cause of the spectrum of disease known as HIV/AIDS. HIV is a retrovirus that primarily infects components of the human immune system such as CD4 + T cells, macrophages and dendritic cells. It directly and indirectly destroys CD4 + T cells.
- 40.4 million total deaths, 630,000 (2022)
- Early: Flu-like illness, Later: Large lymph nodes, fever, weight loss
PubMed. PubMed is a free database including primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine (NLM) at the National Institutes of Health maintains the database as part of the Entrez system of information retrieval.
- January 1996; 27 years ago
- pubmed.ncbi.nlm.nih.gov
A representation of the 3D structure of the protein myoglobin showing turquoise α-helices. This protein was the first to have its structure solved by X-ray crystallography. Toward the right-center among the coils, a prosthetic group called a heme group (shown in gray) with a bound oxygen molecule (red). Proteins are large biomolecules and ...
Visna-maedi virus. The human immunodeficiency viruses ( HIV) are two species of Lentivirus (a subgroup of retrovirus) that infect humans. Over time, they cause acquired immunodeficiency syndrome (AIDS), [1] [2] a condition in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. [3]
