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Jun 4, 2014 at 19:52 comment added Chris They are actually not trained in the bone marrow, but in germinal centers in the lymphatic tissues.
Jun 4, 2014 at 19:46 review Late answers
Jun 4, 2014 at 20:21
Jun 4, 2014 at 19:31 history answered Michael-2012 CC BY-SA 3.0