Last updated on October 6, 2020 at 12:42
I don’t know what they want from this topic.
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22. A-B-0 blood groups. The Rh blood types
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25. Generators and conductors of impulses in the heart. Refractory periods
23. The role of leukocytes in the defence mechanism
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22. A-B-0 blood groups. The Rh blood types
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25. Generators and conductors of impulses in the heart. Refractory periods