Determination of the pH Gradient in Hair Follicles of Human Volunteers Using pH-Sensitive Melamine Formaldehyde-Pyranine Nile Blue Microparticles. - Dennis Kaden; Lars Dähne; Fanny Knorr; Heike Richter; Jürgen Lademann; Martina C. Meinke; Alexa Patzelt; Maxim E. Darvin; Sora Jung (Sensors, 2020)