Phlebotomy refers to a collection of venous blood. This operation can be practiced on all the superficial veins of the body, on those of the foot, the leg, the neck, the whole upper limb. It must be done in an area where there is a protruding vein and the least sensitive to limit pain to the patient. It should not be done in an altered, injured or infected area (like bruise)
The blood is collected on tubes with or without anticoagulant according to the analyzes that one wants to practice.
The reason for choosing the sampling site is for the most part practical, the veins are easily identifiable, and easily accessible for paramedical personnel. Their collection is less dangerous than that of arteries, which are generally thinner and close to the peripheral nerves.
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B cells are a type of white blood cells of a subtype called lymphocytes. They confer acquired or adaptive immunity. This means that B lymphocytes responses to infective microbes are from the memories of their previous encounter with the microbes or antigens.
B lymphocytes fight bacteria and viruses by making Y-shaped proteins called antibodies. These antibodies are specific for each pathogen encountered. They identify and lock on to the surface of invading pathogenic cells and mark and present them for destruction by other immune cells.
Oftentimes, these antibodies are enough to fight off most bacterial infections that we have and therefore there's no need for extensive treatment with drugs.
trait inherited by incomplete dominance is not a blend of two alleles<span> because both are equal and appear on the </span><span>phenotype.
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Erosion is the transport of sediments. Agents of erosion include flowing water, waves, wind, ice, or gravity. Eroded material is eventually dropped somewhere else. This is called deposition.
