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How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?
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All vaccination should(nāt) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence
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The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .
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When energy is used, atp molecules convert to adp molecules. this process is called
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The meaning of "where the telescope ends, the microscope begins"...
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