Respiratory systems can be efficient.Logical formLearned from3 sentences. An opening can be respiratory.Logical formLearned from3 sentences. (Gas humidifiers) can be respiratory.Logical formLearned from3 sentences. Respiratory systems can be cardiovascular.Logical formLearned from3 sentences. Respiratory diseases can be serious.Logical formLearned from3 sentences. (Health professionals) can be respiratory.Logical formLearned from3 sentences. Respiratory tract may undergo a treatment.Logical formLearned from3 sentences. An intestine can be respiratory.Logical formLearned from3 sentences. Incidents can be constituted-of-or-filled-with respiratory illness.Logical formLearned from3 sentences. A (gas flow volume) can be respiratory.Logical formLearned from3 sentences. A (care department) can be respiratory.Logical formLearned from3 sentences. An endoscopy can be respiratory.Logical formLearned from3 sentences. (Air sacs) can be respiratory.Logical formLearned from3 sentences. A (nitrate reductase) can be respiratory.Logical formLearned from3 sentences. A susceptibility can be to respiratory diseases.Logical formLearned from3 sentences.