A selectivity may pertain-to an (ion channel).Logical formLearned from4 sentences. (Calcium ion) may undergo an influx.Logical formLearned from4 sentences. (Calcium ions) may undergo a diffusion.Logical formLearned from4 sentences. Complex ions can be soluble.Logical formLearned from4 sentences. Ions can be permeant.Logical formLearned from4 sentences. An ion may be surrounded by some ions.Logical formLearned from4 sentences. Potassium can be an ion.Logical formLearned from4 sentences. A (silicate anion) may capture ions.Logical formLearned from4 sentences. Ions may undergo a reabsorption.Logical formLearned from4 sentences. An (ion beam) can be focused.Logical formLearned from4 sentences. Ions may be dissolved in water.Logical formLearned from4 sentences. An ion may undergo a diffusion.Logical formLearned from4 sentences. A shell may pertain-to an ion.Logical formLearned from4 sentences. (Ion beam instruments) can be focused.Logical formLearned from4 sentences. An ion can be simple.Logical formLearned from4 sentences.