A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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Drugs that bind to the opioid receptors (mu, delta & kappa).
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an extremely diverse genome region in vertebrates that is responsible for antigen presentation. There are two main classes, MHC I and MHC II.
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Questions pertaining to the synthesis of DNA from RNA.
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Nerves that emerge directly from the brain.
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the process in which living organism synthesize molecules and substances they need. Examples would be the photosynthesis where in the end glucose is synthesized or melanin as the resul…
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Altruism refers to behaviour by an individual that increases the fitness of another individual while decreasing the fitness of the actor.
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The science of humanity. In a biological sense anthropology focusses on humans and non-human primates, and their evolutionary, biological, and demographic attributes.
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a naturally occurring, not proteinogenic alpha-amino acid.
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A methyl group can be added to a cytosine residue, usually one that neighbors a guanine (known as a CpG - cytosine-phosphate-guanine - site). This can affect chromatin and histone structures, as well …
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a neuotransmitter which is secreted by dopamine-secreting neurons. It is released in the brain by nerve cells to send signals over the synaptic gap to other nerve cells.
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Acquired ImmunoDeficiency Syndrome (AIDS) is a disease caused by the Human Immunodeficiency Virus (HIV), that results in loss of CD4+ T-Lymphocyte thereby leading to a loss of immune function.
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