New ISE-Based Apparatus for Na+, K+, Cl-, pH and Transepithelial Potential Difference Real-Time Simultaneous Measurements of Ion Transport across Epithelial Cells Monolayer-Advantages and Pitfalls. - Miroslaw Zajac; Andrzej Lewenstam; Magdalena Stobiecka; Krzysztof Dolowy (Sensors, 2019)