Figure 2From: Determination of cytokine protein levels in oral secretions in patients undergoing radiotherapy for head and neck malignanciesIL-4, EGF, TNF-alpha, and IL-6 levels in saliva before and after irradiation. Salivary cytokine levels were assessed with Milliplex with concentrations corrected for wet weight of the collecting sponge. Each point represents a single patient sample. HD region: within the high radiation dose region, LD region: outside of the high dose region, bar: median.Back to article page