Ions may be used.Logical formLearned from4 sentences. A percent may pertain-to (oxygen ions).Logical formLearned from4 sentences. An ion may undergo a reduction.Logical formLearned from4 sentences. A direction may pertain-to an (ion beam).Logical formLearned from4 sentences. (Calcium ion levels) can be intracellular.Logical formLearned from4 sentences. A beam can be constituted-of-or-filled-with heavy ions.Logical formLearned from4 sentences. (Oxygen ions) may migrate through a membrane.Logical formLearned from4 sentences. Some beams can be constituted-of-or-filled-with ions.Logical formLearned from4 sentences. Ions can be in a beam.Logical formLearned from4 sentences. Species can be constituted-of-or-filled-with ion.Logical formLearned from4 sentences. A beam can be constituted-of-or-filled-with (gallium ions).Logical formLearned from4 sentences. Ions may be released.Logical formLearned from4 sentences. An (ion beam) can be accelerated.Logical formLearned from4 sentences. Ions can be removed.Logical formLearned from4 sentences. An (ion pump) can be distributed.Logical formLearned from4 sentences.