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Biology, 21.06.2019 21:30
What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.
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Biology, 22.06.2019 11:00
What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?
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Biology, 23.06.2019 04:00
How does photosynthesis cellular respiration happen in a plant
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Assuming a circular piece of DNA (plasmid) was used as starting material, how many restriction sites...
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