Adherents may undergo concentration.Logical formLearned from4 sentences. Systems may undergo concentration.Logical formLearned from4 sentences. (Engineering programs) may involve concentration of study.Logical formLearned from4 sentences. Concentrations may pertain-to a male-person.Logical formLearned from4 sentences. Mines may undergo concentrations.Logical formLearned from4 sentences. Immune cells may undergo concentration.Logical formLearned from4 sentences. Radioactive isotopes may undergo concentration.Logical formLearned from4 sentences. A nanogram may undergo concentration.Logical formLearned from4 sentences. Collagenous fibers may undergo concentration.Logical formLearned from4 sentences. Species of fish may contain concentrations of mercury.Logical formLearned from4 sentences. (Concentration camps) can be mutant.Logical formLearned from4 sentences. Atoms may undergo concentrations.Logical formLearned from4 sentences. Concentrations can be in a continental-region.Logical formLearned from4 sentences. Concentrations can be applied.Logical formLearned from4 sentences. (Oxygen gas) may undergo concentration.Logical formLearned from4 sentences.