During a platelet donation, called Apheresis, your whole blood is removed into sterile tubing and satellite bags. A machine called a centrifuge spins your blood to separate your red blood cells, platelets and plasma. As the blood is separated, the heavier reds cells sink to the bottom and are given back to you. The liquid plasma rises and in between these two components is a layer of platelets that are tracked into a small pouch wrapped around the cylinder of the centrifuge. When you give blood, it triggers your spleen to flood your blood stream with stored platelets to try and stop the bleeding. Thus, more plasma and platelets are collected and you are able to donate one, two or potentially three doses of platelets during one visit. Meanwhile, your healthy bone marrow immediately begins converting more stem cells into platelets to replace those that have been donated. Platelet donors can give a larger quantity and, since the donation comes from a single donor, better quality of platelets to help patients in their battle to live. a. Name the process that is being explained here? b. Define the above mentioned process? c. Represent the above process in the form of a diagram? d. How can plasma therapy help save life’s of people suffering from chronic diseases?
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1. যুক্তি দিয়ে প্রমাণ করো যে, বৃত্তস্থ চতুর্ভুজের বিপরীত কোণগুলি পরস্পর সম্পূরক
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